diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index 6ac525820..c1c2593d2 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,3 +1,8 @@
+November 17, 2009  (Changes by Graf Zahl)
+- reverted the change that makes 0-damage projectiles call P_DamageMobj.
+  Both Hexen and Heretic depend on such projectiles not doing it as do many
+  mods that create snow/rain effects plus any terrain splash mod.
+
 November 15, 2009  (Changes by Graf Zahl)
 - fixed: fullscreen images with texture scaling used the unscaled size for
   positioning. To avoid future problems with them I added a new DTA_Fullscreen
diff --git a/src/p_map.cpp b/src/p_map.cpp
index 223f62816..4a5f91e50 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -1091,7 +1091,7 @@ bool PIT_CheckThing (AActor *thing, FCheckPosition &tm)
 		}
 		// Do damage
 		damage = tm.thing->GetMissileDamage ((tm.thing->flags4 & MF4_STRIFEDAMAGE) ? 3 : 7, 1);
-		if (damage >= 0)
+		if ((damage > 0) || (tm.thing->flags6 & MF6_FORCEPAIN)) 
 		{
 			P_DamageMobj (thing, tm.thing, tm.thing->target, damage, tm.thing->DamageType);
 			if (damage > 0)