diff --git a/test/fixedbugs/issue11590.go b/test/fixedbugs/issue11590.go
index 9776704b2a..1acac64c73 100644
--- a/test/fixedbugs/issue11590.go
+++ b/test/fixedbugs/issue11590.go
@@ -6,6 +6,6 @@
 
 package p
 
-var _ = int8(4) * 300         // ERROR "constant overflows int8"
-var _ = complex64(1) * 1e200  // ERROR "constant overflows complex64"
-var _ = complex128(1) * 1e500 // ERROR "constant overflows complex128"
+var _ = int8(4) * 300         // ERROR "constant 300 overflows int8" "constant 1200 overflows int8"
+var _ = complex64(1) * 1e200  // ERROR "constant 1e\+200 overflows complex64"
+var _ = complex128(1) * 1e500 // ERROR "constant 1\.00000e\+500 overflows complex128"