Index: uspace/lib/libc/include/assert.h
===================================================================
--- uspace/lib/libc/include/assert.h	(revision 89cb1402392f2b9bc19e07a45fb935eaf0be3e0f)
+++ uspace/lib/libc/include/assert.h	(revision b83ba8179c33ad85d30d6e84e46f3d415ecd02d1)
@@ -51,5 +51,12 @@
 
 #ifndef NDEBUG
-#	define assert(expr) if (!(expr)) { printf("Assertion failed (%s) at file '%s', line %d.\n", #expr, __FILE__, __LINE__); abort();}
+#	define assert(expr) \
+		do { \
+			if (!(expr)) { \
+				printf("Assertion failed (%s) at file '%s', " \
+				    "line %d.\n", #expr, __FILE__, __LINE__); \
+				abort(); \
+			} \
+		} while (0)
 #else
 #	define assert(expr)