diff --git a/modules/contrib/dnf.py b/modules/contrib/dnf.py
index d3ceebf..3e39d8e 100644
--- a/modules/contrib/dnf.py
+++ b/modules/contrib/dnf.py
@@ -19,7 +19,7 @@ import bumblebee.engine
 
 def get_dnf_info(widget):
     try:
-        res = bumblebee.util.execute("dnf updateinfo")
+        res = bumblebee.util.execute('dnf updateinfo')
     except RuntimeError:
         pass
 
@@ -27,26 +27,26 @@ def get_dnf_info(widget):
     bugfixes = 0
     enhancements = 0
     other = 0
-    for line in res.split("\n"):
+    for line in res.split('\n'):
 
-        if not line.startswith(" "): continue
-        elif "ecurity" in line:
+        if not line.startswith(' '): continue
+        elif 'ecurity' in line:
             for s in line.split():
                 if s.isdigit(): security += int(s)
-        elif "ugfix" in line:
+        elif 'ugfix' in line:
             for s in line.split():
                 if s.isdigit(): bugfixes += int(s)
-        elif "hancement" in line:
+        elif 'hancement' in line:
             for s in line.split():
                 if s.isdigit(): enhancements += int(s)
         else:
             for s in line.split():
                 if s.isdigit(): other += int(s)
 
-    widget.set("security", security)
-    widget.set("bugfixes", bugfixes)
-    widget.set("enhancements", enhancements)
-    widget.set("other", other)
+    widget.set('security', security)
+    widget.set('bugfixes', bugfixes)
+    widget.set('enhancements', enhancements)
+    widget.set('other', other)
 
 class Module(bumblebee.engine.Module):
     def __init__(self, engine, config):
@@ -57,9 +57,9 @@ class Module(bumblebee.engine.Module):
 
     def updates(self, widget):
         result = []
-        for t in ["security", "bugfixes", "enhancements", "other"]:
+        for t in ['security', 'bugfixes', 'enhancements', 'other']:
             result.append(str(widget.get(t, 0)))
-        return "/".join(result)
+        return '/'.join(result)
 
     def update(self, widgets):
         thread = threading.Thread(target=get_dnf_info, args=(widgets[0],))
@@ -67,11 +67,11 @@ class Module(bumblebee.engine.Module):
 
     def state(self, widget):
         cnt = 0
-        for t in ["security", "bugfixes", "enhancements", "other"]:
+        for t in ['security', 'bugfixes', 'enhancements', 'other']:
             cnt += widget.get(t, 0)
         if cnt == 0:
-            return "good"
-        if cnt > 50 or widget.get("security", 0) > 0:
-            return "critical"
+            return 'good'
+        if cnt > 50 or widget.get('security', 0) > 0:
+            return 'critical'
 
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