diff --git a/include/ucore/utils.h b/include/ucore/utils.h
index e2b6592..70e5ca9 100644
--- a/include/ucore/utils.h
+++ b/include/ucore/utils.h
@@ -6,9 +6,8 @@
 
 //Gnerate a compiler error if the compile time
 //constant expression fails
-#define UC_STATIC_ASSERT(expr) \
-        enum { assert_static__ = 1/(expr) };
-
+#define UC_STATIC_ASSERT(expr)\
+    typedef int STATIC_ASSERT_FAILED[(expr) ? 1 : -1]
 
 //MAX of a and b
 #define UC_MAX(a,b) \