diff --git a/Dockerfile b/Dockerfile
index 002b39d..96e7a3e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,5 +25,7 @@ echo "Destination: $DEST"
 exec /usr/local/bin/websockify $OPTS $LOCALPORT $DEST
 EOF
 
+RUN chmod +x /entrypoint.sh
+
 ENTRYPOINT ["/entrypoint.sh"]