Index: head/sys/dev/mpt/mpt.h
===================================================================
--- head/sys/dev/mpt/mpt.h
+++ head/sys/dev/mpt/mpt.h
@@ -932,14 +932,14 @@
 
 #define mpt_lprt(mpt, level, ...)		\
 do {						\
-	if (level <= (mpt)->verbose)		\
+	if ((level) <= (mpt)->verbose)		\
 		mpt_prt(mpt, __VA_ARGS__);	\
 } while (0)
 
 #if 0
 #define mpt_lprtc(mpt, level, ...)		\
 do {						\
-	if (level <= (mpt)->verbose)		\
+	if ((level) <= (mpt)->verbose)		\
 		mpt_prtc(mpt, __VA_ARGS__);	\
 } while (0)
 #endif