diff --git a/codec/types/any_test.go b/codec/types/any_test.go
index f5ae3a1fd6..cd211c0f00 100644
--- a/codec/types/any_test.go
+++ b/codec/types/any_test.go
@@ -35,8 +35,10 @@ func TestNewAnyWithCustomTypeURLWithErrorNoAllocation(t *testing.T) {
 	any, err := types.NewAnyWithCustomTypeURL(eom, fauxURL)
 	runtime.ReadMemStats(&ms2)
 	// Ensure that no fresh allocation was made.
-	if diff := ms2.HeapAlloc - ms1.HeapAlloc; diff > 0 {
-		t.Errorf("Unexpected allocation of %d bytes", diff)
+	if ms2.HeapAlloc > ms1.HeapAlloc {
+		// In some cases, `ms1.HeapAlloc` is larger than `ms2.HeapAlloc`.
+		// It is probably because the gc worked.
+		t.Errorf("Unexpected allocation of %d bytes", ms2.HeapAlloc - ms1.HeapAlloc)
 	}
 	if err == nil {
 		t.Fatal("err wasn't returned")