diff --git a/scripts/prepare_offline_packages.sh b/scripts/prepare_offline_packages.sh
index 5cfe9ef..49198dc 100644
--- a/scripts/prepare_offline_packages.sh
+++ b/scripts/prepare_offline_packages.sh
@@ -129,7 +129,10 @@ for pkg in "${PACKAGES[@]}"; do
     log_info "Checking dependencies for $pkg..."
     if [[ "$pkg" == @* ]]; then
         # Handle package groups
-        yum groupinfo "${pkg#@}" | grep "Mandatory Packages:" -A 100 | grep "^[[:space:]]*[^[:space:]]*" >> "$TEMP_PKGS"
+        # Remove '+' prefix and leading/trailing whitespace from package names
+        yum groupinfo "${pkg#@}" | grep "Mandatory Packages:" -A 100 | \
+        grep "^[[:space:]]*[^[:space:]]*" | \
+        sed 's/^[[:space:]]*+*//;s/[[:space:]]*$//' >> "$TEMP_PKGS"
     else
         echo "$pkg" >> "$TEMP_PKGS"
         get_dependencies "$pkg" >> "$TEMP_PKGS"