diff --git a/doc/Makefile b/doc/Makefile
index 48584158..2bd0d3be 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -24,4 +24,4 @@ homepage: nav apidocs
 
 
 clean:
-	rm -f $(NAVFILES) $(HTMLFILES)
+	rm -f $(NAVFILES) $(HTMLFILES) *.pyc *.pyo