diff --git a/run.sh b/run.sh
index c0a79927dc7..9769f9be582 100755
--- a/run.sh
+++ b/run.sh
@@ -16,7 +16,7 @@ function build_graph {
   FILE=$2
   echo "building graph..."
   DIR="graphs"
-  rm -rf $DIR
+  rm -rf $DIR || true
   mkdir -p $DIR
   unzip -o -d $DIR $FILE
   mv $DIR/router-$GRAPHNAME $DIR/$GRAPHNAME