diff --git a/gameupdate/patch.bat b/gameupdate/patch.bat
index 45c1376..5220fee 100644
--- a/gameupdate/patch.bat
+++ b/gameupdate/patch.bat
@@ -80,7 +80,7 @@ if exist "%ROOT_DIR%\data.dts" (
         echo [Pre-Setup] Running SRPG_Unpacker preparation steps...
 
     REM Step 1: Unpack (once)
-    if not exist "%ROOT_DIR%\data\" if exist "%ROOT_DIR%\data\project.dat" (
+    if not exist "%ROOT_DIR%\data\" if not exist "%ROOT_DIR%\data\project.dat" (
             if exist "%ROOT_DIR%\data.dts" (
                 echo [Pre-Setup] Step 1: Unpacking data.dts to data
                 pushd "%ROOT_DIR%"