diff --git a/src/p_map.c b/src/p_map.c
index 612f15220..7ed28751f 100644
--- a/src/p_map.c
+++ b/src/p_map.c
@@ -1969,22 +1969,28 @@ boolean P_TryMove(mobj_t *thing, fixed_t x, fixed_t y, boolean allowdropoff)
 						thing->z = (thing->ceilingz = thingtop = tmceilingz) - thing->height;
 						thing->eflags |= MFE_JUSTSTEPPEDDOWN;
 					}
-					else if (tmceilingz < thingtop && thingtop - tmceilingz <= maxstep)
+#ifdef ESLOPE
+					// HACK TO FIX DSZ2: apply only if slopes are involved
+					else if (tmceilingslope && tmceilingz < thingtop && thingtop - tmceilingz <= maxstep)
 					{
 						thing->z = (thing->ceilingz = thingtop = tmceilingz) - thing->height;
 						thing->eflags |= MFE_JUSTSTEPPEDDOWN;
 					}
+#endif
 				}
 				else if (thing->z == thing->floorz && tmfloorz < thing->z && thing->z - tmfloorz <= maxstep)
 				{
 					thing->z = thing->floorz = tmfloorz;
 					thing->eflags |= MFE_JUSTSTEPPEDDOWN;
 				}
-				else if (tmfloorz > thing->z && tmfloorz - thing->z <= maxstep)
+#ifdef ESLOPE
+				// HACK TO FIX DSZ2: apply only if slopes are involved
+				else if (tmfloorslope && tmfloorz > thing->z && tmfloorz - thing->z <= maxstep)
 				{
 					thing->z = thing->floorz = tmfloorz;
 					thing->eflags |= MFE_JUSTSTEPPEDDOWN;
 				}
+#endif
 			}
 
 			if (thing->eflags & MFE_VERTICALFLIP)