diff --git a/test/ioctl/mock.c b/test/ioctl/mock.c
index 7402b45c1..da3caba89 100644
--- a/test/ioctl/mock.c
+++ b/test/ioctl/mock.c
@@ -118,7 +118,7 @@ void end_mock_cmds(void)
 	} \
 })
 
-#ifdef HAVE_GLIBC_IOCTL
+#if defined(HAVE_GLIBC_IOCTL) && HAVE_GLIBC_IOCTL == 1
 typedef int (*ioctl_func_t)(int, unsigned long, void *);
 int ioctl(int fd, unsigned long request, ...)
 #else