@@ -78,6 +78,7 @@
 #else /* _KERNEL */
 
 #include <sys/cdefs.h>
+#include <sys/queue.h>
 
 #ifdef _KERNEL_OPT
 #include "opt_dtrace.h"
@@ -170,8 +171,8 @@
 #define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)	do {	\
 	if (sdt_##prov##_##mod##_##func##_##name->id)				\
 		(*sdt_probe_func)(sdt_##prov##_##mod##_##func##_##name->id,	\
-		    (uintptr_t) arg0, (uintptr_t) arg1, (uintptr_t) arg2,	\
-		    (uintptr_t) arg3, (uintptr_t) arg4);			\
+		    (uintptr_t) (arg0), (uintptr_t) (arg1), (uintptr_t) (arg2),	\
+		    (uintptr_t) (arg3), (uintptr_t) (arg4));			\
 } while (0)
 
 #define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type, xtype)		\