diff --git a/tests/web/wasm/issue_56234_test.dart b/tests/web/wasm/issue_56234_test.dart
index 4ae787274ac..a6845358241 100644
--- a/tests/web/wasm/issue_56234_test.dart
+++ b/tests/web/wasm/issue_56234_test.dart
@@ -5,7 +5,7 @@
 // Formatting can break multitests, so don't format them.
 // dart format off
 
-// dart2wasmOptions=--extra-compiler-option=--omit-explicit-checks
+// dart2wasmOptions=-O0 --extra-compiler-option=--omit-explicit-checks
 
 class C {
   final double x;