diff --git a/.ci/windows-steps.yaml b/.ci/windows-steps.yaml
index e45fb26eb6..f86cf73d1d 100644
--- a/.ci/windows-steps.yaml
+++ b/.ci/windows-steps.yaml
@@ -164,8 +164,7 @@ steps:
       $env:INSTALL_VERSION = $env:MLPACK_VERSION;
     }
     # Build the MSI installer.
-    dir "C:\Program Files (x86)\"
-    set path="C:\Program Files (x86)\WiX Toolset v3.11\bin";%path%
+    set path="C:\Program Files (x86)\WiX Toolset v3.11\bin";$path
     cd dist\win-installer\mlpack-win-installer
     heat dir ..\staging
         -cg HeatGenerated