diff --git a/src/p_enemy.cpp b/src/p_enemy.cpp
index f74c94e8e7..01e8aafacf 100644
--- a/src/p_enemy.cpp
+++ b/src/p_enemy.cpp
@@ -1837,7 +1837,7 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_LookEx)
 
 	AActor *targ = NULL; // Shuts up gcc
 	fixed_t dist;
-	angle_t fov = (fov_f == 0) ? 180 : angle_t(fov_f * ANGLE_90 / 90);
+	angle_t fov = (fov_f == 0) ? ANGLE_180 : angle_t(fov_f * ANGLE_90 / 90);
 	FLookExParams params = { fov, minseedist, maxseedist, maxheardist, flags, seestate };
 
 	if (self->flags5 & MF5_INCONVERSATION)