diff --git a/i3pystatus/cpu_usage_graph.py b/i3pystatus/cpu_usage_graph.py
index a9fa259..55cd62e 100644
--- a/i3pystatus/cpu_usage_graph.py
+++ b/i3pystatus/cpu_usage_graph.py
@@ -27,7 +27,7 @@ class CpuUsageGraph(CpuUsage, ColorRangeModule):
         ("end_color", "Hex or English name for end of color range, eg '#FF0000' or 'red'"),
         ("graph_width", "Width of the cpu usage graph"),
         ("graph_style", "Graph style ('blocks', 'braille-fill', 'braille-peak', or 'braille-snake')"),
-        ("direction" , "Graph running direction ('lr', 'rl')"),
+        ("direction", "Graph running direction ('lr', 'rl')"),
     )
 
     graph_width = 15