diff --git a/mushr_rhc_ros/src/librhc/utils/cache.py b/mushr_rhc_ros/src/librhc/utils/cache.py
index e24ea24..524845f 100644
--- a/mushr_rhc_ros/src/librhc/utils/cache.py
+++ b/mushr_rhc_ros/src/librhc/utils/cache.py
@@ -25,4 +25,4 @@ def get_cache_dir(params, path):
 
 
 def get_cache_map_dir(params, map):
-    return get_cache_dir(params, map.name)
+    return get_cache_dir(params, 'mapres_%dh_%dw'%(map.height,map.width))