diff --git a/source/include/smb_macros.h b/source/include/smb_macros.h
index 9fe7f26cb31..fe0d15149bb 100644
--- a/source/include/smb_macros.h
+++ b/source/include/smb_macros.h
@@ -54,7 +54,7 @@
 #define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
 
 /* assert macros */
-#define SMB_ASSERT(b) ((b)?0: \
+#define SMB_ASSERT(b) ((b)?(void)0: \
         (DEBUG(0,("PANIC: assert failed at %s(%d)\n", \
 		 __FILE__, __LINE__)), smb_panic("assert failed")))
 #define SMB_ASSERT_ARRAY(a,n) SMB_ASSERT((sizeof(a)/sizeof((a)[0])) >= (n))