diff --git a/python_source/voidUtil/catalogUtil.py b/python_source/voidUtil/catalogUtil.py
index d7e31dd..14f588e 100644
--- a/python_source/voidUtil/catalogUtil.py
+++ b/python_source/voidUtil/catalogUtil.py
@@ -442,7 +442,10 @@ def loadVoidCatalog(sampleDir, dataPortion="central", loadParticles=True,
 
 
     print("Loading volumes...")
-    volFile = sampleDir+"/vol_"+sample.fullName+".dat"
+    if sample.hasWeightedVolumes:
+      volFile = sampleDir+"/vol_weighted_"+sample.fullName+".dat"
+    else:
+      volFile = sampleDir+"/vol_"+sample.fullName+".dat"
     with open(volFile, mode="rb") as File:
       chk = np.fromfile(File, dtype=np.int32,count=1)
       vols = np.fromfile(File, dtype=np.float32,count=numPartTot)