diff --git a/distro/scripts/adl_cots.sh b/distro/scripts/adl_cots.sh
index c867036d2272d31c2c0a76ca2e0f72dc5c98ffd0..f11a8ff0cec5ce29c857b1a1ec1c1936a09cca59 100755
--- a/distro/scripts/adl_cots.sh
+++ b/distro/scripts/adl_cots.sh
@@ -345,7 +345,7 @@ mk_gtest()
 mk_proto()
 {
     echo ${FUNCNAME[0]}
-    PATH=/CSPP_SDR_4_0/JAVA_COTS/jdk1.8.0_73/bin/javac:$PATH
+    PATH=/CSPP_SDR_4_0/JAVA_COTS/jdk1.8.0_73/bin/:$PATH
     tar_name=protobuf-3.8.x.zip  && \
     rm -fr ${BUILD}/protobuf*  && \
     rm -fr ${USER_COTS_PATH}//google/protobuf  && \