diff --git a/rainbow/build.py b/rainbow/build.py
index 8c8785d..b8e7f03 100644
--- a/rainbow/build.py
+++ b/rainbow/build.py
@@ -147,10 +147,9 @@ def run(self):
 
 def makeparentdirs(path):
     directory = os.path.dirname(path)
-    if not os.path.exists(directory):
+    if not os.path.exists(directory):  # no cover
         try:
-            os.makedirs(directory)  # no cover
-        except OSError, e:
-            # be happy if someone already created the path
+            os.makedirs(directory)
+        except OSError as e:
             if e.errno != errno.EEXIST:
                 raise