diff --git a/compiler/forget/src/__tests__/fixtures/compiler/error.invalid-array-push-frozen.expect.md b/compiler/forget/src/__tests__/fixtures/compiler/error.invalid-array-push-frozen.expect.md
new file mode 100644
index 0000000000..0c52830e06
--- /dev/null
+++ b/compiler/forget/src/__tests__/fixtures/compiler/error.invalid-array-push-frozen.expect.md
@@ -0,0 +1,21 @@
+
+## Input
+
+```javascript
+function Component(props) {
+  const x = [];
+  <div>{x}</div>;
+  x.push(props.value);
+  return x;
+}
+
+```
+
+
+## Error
+
+```
+[ReactForget] InvalidInput: InferReferenceEffects: inferred mutation of known immutable value. Found mutation of $20:TObject<BuiltInArray> (frozen) (4:4)
+```
+          
+      
\ No newline at end of file
diff --git a/compiler/forget/src/__tests__/fixtures/compiler/error.invalid-array-push-frozen.js b/compiler/forget/src/__tests__/fixtures/compiler/error.invalid-array-push-frozen.js
new file mode 100644
index 0000000000..3ede9c0463
--- /dev/null
+++ b/compiler/forget/src/__tests__/fixtures/compiler/error.invalid-array-push-frozen.js
@@ -0,0 +1,6 @@
+function Component(props) {
+  const x = [];
+  <div>{x}</div>;
+  x.push(props.value);
+  return x;
+}