diff --git a/packaging/tools/post.sh b/packaging/tools/post.sh
index 569f316ff3d3edf0af49d9e132044a348b0a6394..00705fad778c065eddbd7cb65a2f9c5583a9997b 100755
--- a/packaging/tools/post.sh
+++ b/packaging/tools/post.sh
@@ -81,8 +81,10 @@ function install_lib() {
     ${csudo} ln -s ${lib_dir}/libtaos.* ${lib_link_dir}/libtaos.so.1
     ${csudo} ln -s ${lib_link_dir}/libtaos.so.1 ${lib_link_dir}/libtaos.so
     
-    ${csudo} ln -s ${lib_dir}/libtaos.* ${lib64_link_dir}/libtaos.so.1           || :
-    ${csudo} ln -s ${lib64_link_dir}/libtaos.so.1 ${lib64_link_dir}/libtaos.so   || :
+    if [[ -d ${lib64_link_dir} && ! -e ${lib64_link_dir}/libtaos.so ]]; then
+      ${csudo} ln -s ${lib_dir}/libtaos.* ${lib64_link_dir}/libtaos.so.1           || :
+      ${csudo} ln -s ${lib64_link_dir}/libtaos.so.1 ${lib64_link_dir}/libtaos.so   || :
+    fi
 }
 
 function install_bin() {