diff --git a/lib/erl/src/Makefile b/lib/erl/src/Makefile
index 1a07b0a..b42e005 100644
--- a/lib/erl/src/Makefile
+++ b/lib/erl/src/Makefile
@@ -67,6 +67,7 @@
 # beam files.
 clean:
 	rm -f $(TARGET_FILES)
+	rm -f *~
 	rm -f core
 	rm -rf $(EBIN)
 	rm -rf *html