diff --git a/benchtests/bench-strstr.c b/benchtests/bench-strstr.c
index a31294e3c9..b7431de320 100644
--- a/benchtests/bench-strstr.c
+++ b/benchtests/bench-strstr.c
@@ -22,6 +22,7 @@
 
 
 #define STRSTR simple_strstr
+#undef libc_hidden_builtin_def
 #define libc_hidden_builtin_def(X)
 #define __strnlen strnlen
 #include "../string/strstr.c"