diff --git a/Makefile b/Makefile
index a541419f9a..8d16a252f2 100644
--- a/Makefile
+++ b/Makefile
@@ -89,8 +89,8 @@ $(PLOVR_JAR):
 clean:
 	rm -f build/all.js
 	rm -f build/ol3.js
+	rm -f demos/*/*.html
 	rm -f demos/*/advanced-optimizations.*
-	rm -f demos/*/debug.html
 	rm -f demos/*/simple-optimizations.*
 
 reallyclean: clean