diff --git a/tests/language/number/int2_test.dart b/tests/language/number/int2_test.dart
index a2c15cc..9756f06 100644
--- a/tests/language/number/int2_test.dart
+++ b/tests/language/number/int2_test.dart
@@ -9,7 +9,7 @@
 
 main() {
   // dart2js knows that this list is int or null.
-  dynamic b = [null, 9223372036854775806];
+  dynamic b = [null, 9223372036854774784];
 
   // Use b[1] twice to ensure dart2js realizes it's the same value
   // after type propagation.