diff --git a/installer/TactileIpc3D.iss b/installer/TactileIpc3D.iss
index feb1f31..84136d4 100644
--- a/installer/TactileIpc3D.iss
+++ b/installer/TactileIpc3D.iss
@@ -1,9 +1,15 @@
 #define MyAppName "TactileIpc3D"
-#define MyAppVersion "0.5.0"
+#ifndef MyAppVersion
+  #define MyAppVersion "0.5.0"
+#endif
 #define MyAppPublisher "TactileIpc3D"
 #define MyAppExeName "TactileIpc3D.exe"
-#define SourceDir "..\\build\Desktop_Qt_6_8_3_MinGW_64_bit-Release\\out\Release"
-#define OutputDir "..\\dist"
+#ifndef SourceDir
+  #define SourceDir "..\\dist"
+#endif
+#ifndef OutputDir
+  #define OutputDir "..\\dist"
+#endif
 #define AssetsDir "assets"
 #define AppIconFile AssetsDir + "\\App.ico"
 #define WizardSmallFile AssetsDir + "\\WizardSmall.bmp"