diff --git a/plugins/measure/calc_volume.py b/plugins/measure/calc_volume.py
index 8deb2673..4a3fbfef 100755
--- a/plugins/measure/calc_volume.py
+++ b/plugins/measure/calc_volume.py
@@ -35,7 +35,7 @@ def main():
     Module("r.external", input=opts['dsm_file'], output="dsm", overwrite=True)
 
     # Set Grass region to vector bbox and resolution to DSM
-    Module("g.region", vector="region", res="dsm")
+    Module("g.region", vector="region")
 
     # Create a mask to speed up computation
     Module("r.mask", vector="region")