diff --git a/src/p_map.c b/src/p_map.c
index 943f20313..a490c7f3b 100644
--- a/src/p_map.c
+++ b/src/p_map.c
@@ -1533,8 +1533,7 @@ boolean P_CheckPosition(mobj_t *thing, fixed_t x, fixed_t y)
 				+ ((topheight - bottomheight)/2));
 
 			if (topheight > tmfloorz && abs(delta1) < abs(delta2)
-				&& !(rover->flags & FF_REVERSEPLATFORM)
-				&& ((P_MobjFlip(tmthing)*tmthing->momz >= 0) || (!(rover->flags & FF_PLATFORM))))
+				&& !(rover->flags & FF_REVERSEPLATFORM))
 			{
 				tmfloorz = tmdropoffz = topheight;
 #ifdef ESLOPE
@@ -1543,7 +1542,6 @@ boolean P_CheckPosition(mobj_t *thing, fixed_t x, fixed_t y)
 			}
 			if (bottomheight < tmceilingz && abs(delta1) >= abs(delta2)
 				&& !(rover->flags & FF_PLATFORM)
-				&& ((P_MobjFlip(tmthing)*tmthing->momz >= 0) || (!(rover->flags & FF_REVERSEPLATFORM)))
 				&& !(thing->type == MT_SKIM && (rover->flags & FF_SWIMMABLE)))
 			{
 				tmceilingz = tmdrpoffceilz = bottomheight;