diff --git a/scripts/install/openim-api.sh b/scripts/install/openim-api.sh
index b84d80c8f..96f571e1c 100755
--- a/scripts/install/openim-api.sh
+++ b/scripts/install/openim-api.sh
@@ -47,12 +47,14 @@ function openim::api::start() {
 
   openim::log::info "Starting ${SERVER_NAME} ..."
 
+  readonly OPENIM_API_SERVER_LIBRARIES="${OPENIM_OUTPUT_HOSTBIN}/${SERVER_NAME}"
+  openim::util::stop_services_with_name ${OPENIM_API_SERVER_LIBRARIES}
+
+
   printf "+------------------------+--------------+\n"
   printf "| Service Name           | Port         |\n"
   printf "+------------------------+--------------+\n"
 
-  readonly OPENIM_API_SERVER_LIBRARIES="${OPENIM_OUTPUT_HOSTBIN}/${SERVER_NAME}"
-  openim::util::stop_services_with_name ${OPENIM_API_SERVER_LIBRARIES}
 
   local length=${#OPENIM_API_SERVICE_LISTARIES[@]}
   for ((i=0; i<length; i++)); do
diff --git a/scripts/lib/util.sh b/scripts/lib/util.sh
index 9b7dd036c..1f5c001cc 100755
--- a/scripts/lib/util.sh
+++ b/scripts/lib/util.sh
@@ -684,9 +684,9 @@ openim::util::stop_services_with_name() {
        all_pids_empty=true
 
        for server_name in "$@"; do
-           pids=$(pgrep -f "$server_name")
+           server_pids=$(pgrep -f "$server_name")
 
-           if [[ ! -z $pids ]]; then
+           if [[ ! -z $server_pids ]]; then
                all_pids_empty=false
                break # If at least one process corresponding to server_name is found, jump out of the for loop.
            fi