diff --git a/tools/ci_build/github/scripts/install_protobuf.sh b/tools/ci_build/github/scripts/install_protobuf.sh
index b912b8e..3d5c3de 100644
--- a/tools/ci_build/github/scripts/install_protobuf.sh
+++ b/tools/ci_build/github/scripts/install_protobuf.sh
@@ -1,4 +1,3 @@
-#!/bin/bash
 set -e -x
 
 INSTALL_PREFIX='/usr'