diff --git a/crates/swc_ecma_minifier/src/pass/mangle_names/preserver.rs b/crates/swc_ecma_minifier/src/pass/mangle_names/preserver.rs
index ac7984075e24..cdfe8045c080 100644
--- a/crates/swc_ecma_minifier/src/pass/mangle_names/preserver.rs
+++ b/crates/swc_ecma_minifier/src/pass/mangle_names/preserver.rs
@@ -101,7 +101,7 @@ impl Visit for Preserver {
         n.visit_children_with(self);
 
         if let Expr::Ident(i) = n {
-            if self.should_preserve || self.is_reserved(i) {
+            if self.should_preserve {
                 self.preserved.insert(i.to_id());
             }
         }
@@ -141,7 +141,7 @@ impl Visit for Preserver {
         n.visit_children_with(self);
 
         if let Pat::Ident(i) = n {
-            if self.should_preserve || self.is_reserved(&i.id) {
+            if self.should_preserve {
                 self.preserved.insert(i.to_id());
             }
         }
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/8622/config.json b/crates/swc_ecma_minifier/tests/fixture/issues/8622/config.json
new file mode 100644
index 000000000000..dccb2dcc1f2c
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/8622/config.json
@@ -0,0 +1,4 @@
+{
+    "defaults": true,
+    "passes": 2
+}
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/8622/input.js b/crates/swc_ecma_minifier/tests/fixture/issues/8622/input.js
new file mode 100644
index 000000000000..8113ce1e5b4e
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/8622/input.js
@@ -0,0 +1,15 @@
+export function foo(cond) {
+    let reserved = 1;
+    if (cond) {
+        reserved = 2;
+    }
+    return [reserved, bar(cond)];
+}
+
+function bar(cond) {
+    let reserved = 1;
+    if (cond) {
+        reserved = 2;
+    }
+    return reserved;
+}
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/8622/mangle.json b/crates/swc_ecma_minifier/tests/fixture/issues/8622/mangle.json
new file mode 100644
index 000000000000..7a0990515db0
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/8622/mangle.json
@@ -0,0 +1,3 @@
+{
+    "reserved": ["reserved"]
+}
diff --git a/crates/swc_ecma_minifier/tests/fixture/issues/8622/output.js b/crates/swc_ecma_minifier/tests/fixture/issues/8622/output.js
new file mode 100644
index 000000000000..207904d056f2
--- /dev/null
+++ b/crates/swc_ecma_minifier/tests/fixture/issues/8622/output.js
@@ -0,0 +1,7 @@
+export function foo(o) {
+    let t, e = 1;
+    return o && (e = 2), [
+        e,
+        (t = 1, o && (t = 2), t)
+    ];
+}