diff --git a/prebuilds/colovu/lib/libcommon.sh b/prebuilds/colovu/lib/libcommon.sh
index f001030..e955b1f 100644
--- a/prebuilds/colovu/lib/libcommon.sh
+++ b/prebuilds/colovu/lib/libcommon.sh
@@ -10,13 +10,13 @@
 
 # 打印包含包含Logo的欢迎信息
 print_welcome_info() {
-    [[ -n "${APP_NAME}" ]] && github_repo="https://github.com/colovu/docker-${APP_NAME}"
+    [[ -n "${APP_NAME:-}" ]] && github_repo="https://github.com/colovu/docker-${APP_NAME}"
 
-    LOG_I '  ____      _ '
-    LOG_I ' / ___|___ | | _____   ___   _ '
-    LOG_I '| |   / _ \| |/ _ \ \ / / | | |  '"Docker : ${BOLD}${APP_NAME:-undefined}${RESET}"
-    LOG_I '| |__| (_) | | (_) \ V /| |_| |  '"Version: ${BOLD}${APP_VER:-0.0}${RESET}"
-    LOG_I ' \____\___/|_|\___/ \_/  \__,_|  '"PowerBy: ${BOLD}Endial@126.com${RESET}"
+    LOG_I "  ____      _ "
+    LOG_I " / ___|___ | | _____   ___   _ "
+    LOG_I "| |   / _ \| |/ _ \ \ / / | | |  Docker : ${BOLD}${APP_NAME:-undefined}${RESET}"
+    LOG_I "| |__| (_) | | (_) \ V /| |_| |  Version: ${BOLD}${APP_VER:-0.0}${RESET}"
+    LOG_I " \____\___/|_|\___/ \_/  \__,_|  PowerBy: ${BOLD}Endial@126.com${RESET}"
     LOG_D " Project Repo: ${github_repo:-}"
     LOG_I ""
 }