diff --git a/scripts/copy-npm-contrib.sh b/scripts/copy-npm-contrib.sh
index a5267f9..def018d 100755
--- a/scripts/copy-npm-contrib.sh
+++ b/scripts/copy-npm-contrib.sh
@@ -7,7 +7,7 @@ cd $(dirname $0)/..
 
 CONTRIB_DIR=$PWD/static/build/contrib
 
-rm -r $CONTRIB_DIR
+rm -rf $CONTRIB_DIR
 mkdir -p $CONTRIB_DIR
 
 mkcontrib() {