diff --git a/collects/meta/build/nsis/installer.nsi b/collects/meta/build/nsis/installer.nsi
index 4759e8f..2fc114d 100644
--- a/collects/meta/build/nsis/installer.nsi
+++ b/collects/meta/build/nsis/installer.nsi
@@ -18,7 +18,7 @@ BGGradient 4040A0 101020
 
 SetCompressor /SOLID "LZMA"
 
-InstallDir "$PROGRAMFILES\${RKTDirName}"
+InstallDir "${RKTProgFiles}\${RKTDirName}"
 !ifndef SimpleInstaller
   InstallDirRegKey HKLM "Software\${RKTRegName}" ""
 !endif