diff --git a/universal_config.sh b/universal_config.sh
index 2585b7a..7de6d19 100644
--- a/universal_config.sh
+++ b/universal_config.sh
@@ -398,7 +398,7 @@ checkPackageAndInstall "unzip" "1"
 manage_package "podkop" "enable" "stop"
 
 PACKAGE="sing-box"
-REQUIRED_VERSION="1.11.15-1"
+REQUIRED_VERSION="1.11.15"
 
 INSTALLED_VERSION=$(opkg list-installed | grep "^$PACKAGE" | cut -d ' ' -f 3)
 if [ -n "$INSTALLED_VERSION" ] && [ "$INSTALLED_VERSION" != "$REQUIRED_VERSION" ]; then
@@ -407,7 +407,7 @@ if [ -n "$INSTALLED_VERSION" ] && [ "$INSTALLED_VERSION" != "$REQUIRED_VERSION"
 fi
 
 INSTALLED_VERSION=$(opkg list-installed | grep "^$PACKAGE")
-if [ -n "$INSTALLED_VERSION" ]; then
+if [ -z "$INSTALLED_VERSION" ]; then
 	PACK_NAME="sing-box"
 	AWG_DIR="/tmp/$PACK_NAME"
 	SINGBOX_FILENAME="sing-box_1.11.15_openwrt_aarch64_cortex-a53.ipk"