diff --git a/libs/util/include/psemek/util/assert.hpp b/libs/util/include/psemek/util/assert.hpp
index 2ac088e6..5feb9977 100644
--- a/libs/util/include/psemek/util/assert.hpp
+++ b/libs/util/include/psemek/util/assert.hpp
@@ -5,7 +5,7 @@
 #ifdef PSEMEK_DEBUG
 #define assert(x) ((void)(!(x) && ::psemek::util::assert_handler(#x, __FILE__, __LINE__)))
 #else
-#define assert(x) ((void)sizeof(x))
+#define assert(x) ((void)(x))
 #endif
 
 namespace psemek::util