diff --git a/SandboxiePlus/install_jom.cmd b/SandboxiePlus/install_jom.cmd
index 449f116a..4ef6e0d8 100644
--- a/SandboxiePlus/install_jom.cmd
+++ b/SandboxiePlus/install_jom.cmd
@@ -1,6 +1,10 @@
+if exist %~dp0..\..\Qt\Tools\QtCreator\bin\jom.exe goto done
+
 curl -LsSO --output-dir %~dp0..\..\ https://download.qt.io/official_releases/jom/jom.zip
 "C:\Program Files\7-Zip\7z.exe" x -aoa -o%~dp0..\..\Qt\Tools\QtCreator\bin\ %~dp0..\..\jom.zip
 
+:done
+
 REM dir %~dp0..\..\
 REM dir %~dp0..\..\Qt
 REM dir %~dp0..\..\Qt\Tools