diff --git a/iocore/eventsystem/I_Action.h b/iocore/eventsystem/I_Action.h
index ca3c5af3ecf..7bbd9943489 100644
--- a/iocore/eventsystem/I_Action.h
+++ b/iocore/eventsystem/I_Action.h
@@ -206,7 +206,7 @@ class Action
 #define MAKE_ACTION_RESULT(_x) (Action *)(((uintptr_t)((_x << 1) + 1)))
 
 #define ACTION_RESULT(_x) \
-  (int)((((uintptr_t)_x)&1)!=0?(((uintptr_t)>>1):(uintptr_t)0))
+  (int)( (((uintptr_t)_x)&1)!=0 ? ((uintptr_t)>>1) : (uintptr_t)0 )
 
 #define IS_ACTION_RESULT(_x) ((((uintptr_t)_x) & 1) != 0)