diff --git a/cluster_modules.py b/cluster_modules.py
index 44221232c0de611413ef422b8ff71d96ba91fd1f..6ee8869bd03e03ddca7e11e571a4d57c0b07ecb8 100755
--- a/cluster_modules.py
+++ b/cluster_modules.py
@@ -56,7 +56,7 @@ for m,i in sorted(counts.items()):
 
 #print software.items()
 
-for m in sorted(software.items()):
+for m in sorted(software.items(), key=lambda i: i[0].lower()):
   software = m[0]
   versions = ''
   clusters = ''