diff --git a/uniro_backend/src/main/java/com/softeer5/uniro_backend/map/service/RouteCalculator.java b/uniro_backend/src/main/java/com/softeer5/uniro_backend/map/service/RouteCalculator.java
index cb7877a4..f10571bb 100644
--- a/uniro_backend/src/main/java/com/softeer5/uniro_backend/map/service/RouteCalculator.java
+++ b/uniro_backend/src/main/java/com/softeer5/uniro_backend/map/service/RouteCalculator.java
@@ -281,7 +281,7 @@ private FastestRouteResultDTO generateResult(List<Route> shortestRoutes, Node st
             }
             currentNode = secondNode;
 
-            double heightDiff = firstNode.getHeight() - secondNode.getHeight();
+            double heightDiff = secondNode.getHeight() - firstNode.getHeight();
             if(heightDiff > 0){
                 heightIncreaseWeight += Math.min(LIMIT_RANGE ,Math.exp(heightDiff) - 1);
             }