diff --git a/src/p_udmf.cpp b/src/p_udmf.cpp
index 54a2a1a8d..2c388e178 100644
--- a/src/p_udmf.cpp
+++ b/src/p_udmf.cpp
@@ -103,7 +103,7 @@ static char HexenSectorSpecialOk[256]={
 static inline bool P_IsThingSpecial(int specnum)
 {
 	return (specnum >= Thing_Projectile && specnum <= Thing_SpawnNoFog) ||
-			specnum == Thing_SpawnFacing || Thing_ProjectileIntercept || Thing_ProjectileAimed;
+			specnum == Thing_SpawnFacing || specnum == Thing_ProjectileIntercept || specnum == Thing_ProjectileAimed;
 }
 
 enum