diff --git a/gcc/testsuite/gcc.dg/memchr-3.c b/gcc/testsuite/gcc.dg/memchr-3.c
index af1b26ef3aee..9c73265a89ee 100644
--- a/gcc/testsuite/gcc.dg/memchr-3.c
+++ b/gcc/testsuite/gcc.dg/memchr-3.c
@@ -6,7 +6,7 @@
 typedef __INT8_TYPE__  int8_t;
 typedef __INT32_TYPE__ int32_t;
 
-extern void* memchr (const void*, int, long); /* { dg-warning "-Wbuiltin-declaration-mismatch" { target llp64 } } */
+extern void* memchr (const void*, int, long); /* { dg-warning "-Wbuiltin-declaration-mismatch" "" { target llp64 } } */
 
 struct SX
 {