diff --git a/lib/libc/minimal/include/assert.h b/lib/libc/minimal/include/assert.h
index b49deac0290..df50bda6d18 100644
--- a/lib/libc/minimal/include/assert.h
+++ b/lib/libc/minimal/include/assert.h
@@ -20,7 +20,7 @@ extern "C" {
 #endif
 #else
 #ifndef assert
-#define assert(test)
+#define assert(test) ((void)0)
 #endif
 #endif