diff --git a/debile/slave/runners/pep8.py b/debile/slave/runners/pep8.py
index bb2ded7..6a4a5e5 100644
--- a/debile/slave/runners/pep8.py
+++ b/debile/slave/runners/pep8.py
@@ -28,10 +28,18 @@ def pep8(dsc, analysis):
     run_command(["dpkg-source", "-x", dsc, "source-pep8"])
     with cd('source-pep8'):
         out, _, ret = run_command(['pep8', '.'])
-        failed = ret != 0
+        print dsc
+        print "out : "
+        print out
+        print "ret : "
+        print ret
 
-        for issue in parse_pep8(out.splitlines()):
-            analysis.results.append(issue)
+        failed = ret != 0
+        if out is not None:
+                for issue in parse_pep8(out.splitlines()):
+                    analysis.results.append(issue)
+        else:
+            print "Output of pep8 checker command is None!"
 
         return (analysis, out, failed, None, None)