diff --git a/src/lua_baselib.c b/src/lua_baselib.c
index 25fa38769..0b0c93be4 100644
--- a/src/lua_baselib.c
+++ b/src/lua_baselib.c
@@ -1078,7 +1078,8 @@ static int lib_pZMovement(lua_State *L)
 	if (!actor)
 		return LUA_ErrInvalid(L, "mobj_t");
 	lua_pushboolean(L, P_ZMovement(actor));
-	P_CheckPosition(actor, actor->x, actor->y);
+	if (!P_MobjWasRemoved(actor))
+		P_CheckPosition(actor, actor->x, actor->y);
 	P_SetTarget(&tmthing, ptmthing);
 	return 1;
 }
@@ -1106,7 +1107,8 @@ static int lib_pSceneryZMovement(lua_State *L)
 	if (!actor)
 		return LUA_ErrInvalid(L, "mobj_t");
 	lua_pushboolean(L, P_SceneryZMovement(actor));
-	P_CheckPosition(actor, actor->x, actor->y);
+	if (!P_MobjWasRemoved(actor))
+		P_CheckPosition(actor, actor->x, actor->y);
 	P_SetTarget(&tmthing, ptmthing);
 	return 1;
 }