diff --git a/packages/babel-plugin-proposal-async-generator-functions/src/for-await.js b/packages/babel-plugin-proposal-async-generator-functions/src/for-await.js
index f9cb7e1e1151..16f08dca1524 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/src/for-await.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/src/for-await.js
@@ -2,14 +2,14 @@ import { types as t, template } from "@babel/core";
 
 const buildForAwait = template(`
   async function wrapper() {
-    var ITERATOR_COMPLETION = true;
+    var ITERATOR_ABRUPT_COMPLETION = false;
     var ITERATOR_HAD_ERROR_KEY = false;
     var ITERATOR_ERROR_KEY;
     try {
       for (
         var ITERATOR_KEY = GET_ITERATOR(OBJECT), STEP_KEY;
-        !(ITERATOR_COMPLETION = (STEP_KEY = await ITERATOR_KEY.next()).done);
-        ITERATOR_COMPLETION = true
+        ITERATOR_ABRUPT_COMPLETION = !(STEP_KEY = await ITERATOR_KEY.next()).done;
+        ITERATOR_ABRUPT_COMPLETION = false
       ) {
       }
     } catch (err) {
@@ -17,7 +17,7 @@ const buildForAwait = template(`
       ITERATOR_ERROR_KEY = err;
     } finally {
       try {
-        if (!ITERATOR_COMPLETION && ITERATOR_KEY.return != null) {
+        if (ITERATOR_ABRUPT_COMPLETION && ITERATOR_KEY.return != null) {
           await ITERATOR_KEY.return();
         }
       } finally {
@@ -50,8 +50,8 @@ export default function (path, { getAsyncIterator }) {
   }
   let template = buildForAwait({
     ITERATOR_HAD_ERROR_KEY: scope.generateUidIdentifier("didIteratorError"),
-    ITERATOR_COMPLETION: scope.generateUidIdentifier(
-      "iteratorNormalCompletion",
+    ITERATOR_ABRUPT_COMPLETION: scope.generateUidIdentifier(
+      "iteratorAbruptCompletion",
     ),
     ITERATOR_ERROR_KEY: scope.generateUidIdentifier("iteratorError"),
     ITERATOR_KEY: scope.generateUidIdentifier("iterator"),
diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-arrow/output.js b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-arrow/output.js
index 76e74426a60a..802dd6d77316 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-arrow/output.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-arrow/output.js
@@ -1,12 +1,12 @@
 /*#__PURE__*/
 babelHelpers.asyncToGenerator(function* () {
-  var _iteratorNormalCompletion = true;
+  var _iteratorAbruptCompletion = false;
   var _didIteratorError = false;
 
   var _iteratorError;
 
   try {
-    for (var _iterator = babelHelpers.asyncIterator(y), _step; !(_iteratorNormalCompletion = (_step = yield _iterator.next()).done); _iteratorNormalCompletion = true) {
+    for (var _iterator = babelHelpers.asyncIterator(y), _step; _iteratorAbruptCompletion = !(_step = yield _iterator.next()).done; _iteratorAbruptCompletion = false) {
       let x = _step.value;
       f(x);
     }
@@ -15,7 +15,7 @@ babelHelpers.asyncToGenerator(function* () {
     _iteratorError = err;
   } finally {
     try {
-      if (!_iteratorNormalCompletion && _iterator.return != null) {
+      if (_iteratorAbruptCompletion && _iterator.return != null) {
         yield _iterator.return();
       }
     } finally {
diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-function-no-transform/output.js b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-function-no-transform/output.js
index e92aec989915..1e1df44ed94a 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-function-no-transform/output.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-function-no-transform/output.js
@@ -1,11 +1,11 @@
 async function foo() {
-  var _iteratorNormalCompletion = true;
+  var _iteratorAbruptCompletion = false;
   var _didIteratorError = false;
 
   var _iteratorError;
 
   try {
-    for (var _iterator = babelHelpers.asyncIterator(y), _step; !(_iteratorNormalCompletion = (_step = await _iterator.next()).done); _iteratorNormalCompletion = true) {
+    for (var _iterator = babelHelpers.asyncIterator(y), _step; _iteratorAbruptCompletion = !(_step = await _iterator.next()).done; _iteratorAbruptCompletion = false) {
       const x = _step.value;
     }
   } catch (err) {
@@ -13,7 +13,7 @@ async function foo() {
     _iteratorError = err;
   } finally {
     try {
-      if (!_iteratorNormalCompletion && _iterator.return != null) {
+      if (_iteratorAbruptCompletion && _iterator.return != null) {
         await _iterator.return();
       }
     } finally {
diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-function/output.js b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-function/output.js
index 15daa7a9040a..fdeebc16c34f 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-function/output.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-function/output.js
@@ -4,13 +4,13 @@ function f() {
 
 function _f() {
   _f = babelHelpers.asyncToGenerator(function* () {
-    var _iteratorNormalCompletion = true;
+    var _iteratorAbruptCompletion = false;
     var _didIteratorError = false;
 
     var _iteratorError;
 
     try {
-      for (var _iterator = babelHelpers.asyncIterator(y), _step; !(_iteratorNormalCompletion = (_step = yield _iterator.next()).done); _iteratorNormalCompletion = true) {
+      for (var _iterator = babelHelpers.asyncIterator(y), _step; _iteratorAbruptCompletion = !(_step = yield _iterator.next()).done; _iteratorAbruptCompletion = false) {
         let x = _step.value;
         g(x);
       }
@@ -19,7 +19,7 @@ function _f() {
       _iteratorError = err;
     } finally {
       try {
-        if (!_iteratorNormalCompletion && _iterator.return != null) {
+        if (_iteratorAbruptCompletion && _iterator.return != null) {
           yield _iterator.return();
         }
       } finally {
diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-generator/output.js b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-generator/output.js
index 076b8fae79bd..1dc0aba51463 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-generator/output.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-generator/output.js
@@ -4,13 +4,13 @@ function g() {
 
 function _g() {
   _g = babelHelpers.wrapAsyncGenerator(function* () {
-    var _iteratorNormalCompletion = true;
+    var _iteratorAbruptCompletion = false;
     var _didIteratorError = false;
 
     var _iteratorError;
 
     try {
-      for (var _iterator = babelHelpers.asyncIterator(y), _step; !(_iteratorNormalCompletion = (_step = yield babelHelpers.awaitAsyncGenerator(_iterator.next())).done); _iteratorNormalCompletion = true) {
+      for (var _iterator = babelHelpers.asyncIterator(y), _step; _iteratorAbruptCompletion = !(_step = yield babelHelpers.awaitAsyncGenerator(_iterator.next())).done; _iteratorAbruptCompletion = false) {
         let x = _step.value;
         f(x);
       }
@@ -19,7 +19,7 @@ function _g() {
       _iteratorError = err;
     } finally {
       try {
-        if (!_iteratorNormalCompletion && _iterator.return != null) {
+        if (_iteratorAbruptCompletion && _iterator.return != null) {
           yield babelHelpers.awaitAsyncGenerator(_iterator.return());
         }
       } finally {
diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/destructuring/output.js b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/destructuring/output.js
index e44677aa6da5..4e599cf8bbb7 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/destructuring/output.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/destructuring/output.js
@@ -4,13 +4,13 @@ function f() {
 
 function _f() {
   _f = babelHelpers.asyncToGenerator(function* () {
-    var _iteratorNormalCompletion = true;
+    var _iteratorAbruptCompletion = false;
     var _didIteratorError = false;
 
     var _iteratorError;
 
     try {
-      for (var _iterator = babelHelpers.asyncIterator(a), _step; !(_iteratorNormalCompletion = (_step = yield _iterator.next()).done); _iteratorNormalCompletion = true) {
+      for (var _iterator = babelHelpers.asyncIterator(a), _step; _iteratorAbruptCompletion = !(_step = yield _iterator.next()).done; _iteratorAbruptCompletion = false) {
         let {
           x,
           y: [z]
@@ -22,7 +22,7 @@ function _f() {
       _iteratorError = err;
     } finally {
       try {
-        if (!_iteratorNormalCompletion && _iterator.return != null) {
+        if (_iteratorAbruptCompletion && _iterator.return != null) {
           yield _iterator.return();
         }
       } finally {
diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/lhs-member-expression/output.js b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/lhs-member-expression/output.js
index 1bba85771390..792882550bc9 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/lhs-member-expression/output.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/lhs-member-expression/output.js
@@ -1,11 +1,11 @@
 (async function () {
-  var _iteratorNormalCompletion = true;
+  var _iteratorAbruptCompletion = false;
   var _didIteratorError = false;
 
   var _iteratorError;
 
   try {
-    for (var _iterator = babelHelpers.asyncIterator(y), _step; !(_iteratorNormalCompletion = (_step = await _iterator.next()).done); _iteratorNormalCompletion = true) {
+    for (var _iterator = babelHelpers.asyncIterator(y), _step; _iteratorAbruptCompletion = !(_step = await _iterator.next()).done; _iteratorAbruptCompletion = false) {
       obj.x = _step.value;
     }
   } catch (err) {
@@ -13,7 +13,7 @@
     _iteratorError = err;
   } finally {
     try {
-      if (!_iteratorNormalCompletion && _iterator.return != null) {
+      if (_iteratorAbruptCompletion && _iterator.return != null) {
         await _iterator.return();
       }
     } finally {
diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/regression/5880/output.js b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/regression/5880/output.js
index 7ff6de47b2a6..dca5c85a89a8 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/regression/5880/output.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/regression/5880/output.js
@@ -1,11 +1,11 @@
 (async () => {
-  var _iteratorNormalCompletion = true;
+  var _iteratorAbruptCompletion = false;
   var _didIteratorError = false;
 
   var _iteratorError;
 
   try {
-    for (var _iterator = babelHelpers.asyncIterator(iterable), _step; !(_iteratorNormalCompletion = (_step = await _iterator.next()).done); _iteratorNormalCompletion = true) {
+    for (var _iterator = babelHelpers.asyncIterator(iterable), _step; _iteratorAbruptCompletion = !(_step = await _iterator.next()).done; _iteratorAbruptCompletion = false) {
       const _step$value = babelHelpers.slicedToArray(_step.value, 1),
             value = _step$value[0];
     }
@@ -14,7 +14,7 @@
     _iteratorError = err;
   } finally {
     try {
-      if (!_iteratorNormalCompletion && _iterator.return != null) {
+      if (_iteratorAbruptCompletion && _iterator.return != null) {
         await _iterator.return();
       }
     } finally {