diff --git a/src/bitmessagemain.py b/src/bitmessagemain.py
index 811bcffd..4a2071f5 100644
--- a/src/bitmessagemain.py
+++ b/src/bitmessagemain.py
@@ -31,9 +31,9 @@ import helper_bootstrap
 
 import sys
 if sys.platform == 'darwin':
-    if float( str(sys.version_info[1]) + "." + str(sys.version_info[2])) < 7.5:
+    if float( "{1}.{2}".format(*sys.version_info) ) < 7.5:
         print "You should use python 2.7.5 or greater."
-        print "Your version:", str(sys.version_info[0]) + "." + str(sys.version_info[1]) + "." + str(sys.version_info[2])
+        print "Your version: {0}.{1}.{2}".format(*sys.version_info)
         sys.exit(0)
 
 def connectToStream(streamNumber):