diff --git a/src/util.py b/src/util.py
index b03a50b..191e3cd 100644
--- a/src/util.py
+++ b/src/util.py
@@ -108,11 +108,11 @@ def dimsize(x):
       size = str( int(b1) - int(b0) + 1 )
     else:
       if b0.replace('-','').isdigit():
-        size = "%s - (%d)"%(b1,int(b0)-1)
+        size = "(%s) - (%d)"%(b1,int(b0)-1)
       elif b1.replace('-','').isdigit():
-        size = "%d - (%s)"%(int(b1)+1,b0)
+        size = "(%d) - (%s)"%(int(b1)+1,b0)
       else:
-        size = "%s - (%s) + 1"%(b1,b0)
+        size = "(%s) - (%s) + 1"%(b1,b0)
     return size
 
 def put_info(text,filename):