diff --git a/packages/babel-traverse/src/path/evaluation.ts b/packages/babel-traverse/src/path/evaluation.ts
index 87e93655034b..6b35af8e6903 100644
--- a/packages/babel-traverse/src/path/evaluation.ts
+++ b/packages/babel-traverse/src/path/evaluation.ts
@@ -172,11 +172,11 @@ function _evaluate(path: NodePath, state: State): any {
       const type = typeof value;
 
       let key = null;
-      if (property.isIdentifier()) {
-        key = property.node.name;
-      } else if (path.node.computed) {
+      if (path.node.computed) {
         key = evaluateCached(property, state);
         if (!state.confident) return;
+      } else if (property.isIdentifier()) {
+        key = property.node.name;
       }
       if (
         (type === "number" || type === "string") &&
diff --git a/packages/babel-traverse/test/evaluation.js b/packages/babel-traverse/test/evaluation.js
index bd21be347521..07897748e71c 100644
--- a/packages/babel-traverse/test/evaluation.js
+++ b/packages/babel-traverse/test/evaluation.js
@@ -119,6 +119,11 @@ describe("evaluation", function () {
         .get("body.0.declarations.0.init")
         .evaluate().value,
     ).toBe("w");
+    expect(
+      getPath("var length = 1; var x = 'abc'[length];")
+        .get("body.1.declarations.0.init")
+        .evaluate().value,
+    ).toBe("b");
     const member_expr = getPath(
       "var x = Math.min(2,Math.max(3,4));var y = Math.random();",
     );