diff --git a/cscripts/Makefile.am b/cscripts/Makefile.am
index 06d032f..927104a 100644
--- a/cscripts/Makefile.am
+++ b/cscripts/Makefile.am
@@ -199,6 +199,7 @@ clean-local:
 		rm -rf $(builddir)/*.par; \
 	fi
 	rm -rf $(builddir)/*.pyc
+    rm -rf $(builddir)/cscripts/__pycache__/*.pyc
 	rm -rf $(builddir)/cscripts/__pycache__
 
 # Uninstall the cscripts Python module