diff --git a/.github/workflows/build-win-installer.yaml b/.github/workflows/build-win-installer.yaml
index c5a09188..7d6f7b78 100644
--- a/.github/workflows/build-win-installer.yaml
+++ b/.github/workflows/build-win-installer.yaml
@@ -13,15 +13,15 @@ jobs:
       - name: Install Language
         run: |
           $baseUri = 'https://raw.github.com/jrsoftware/issrc/main/Files'
-          $downloadDir = "$env:ProgramFiles(x86)/Inno Setup 6/Languages"
+          $downloadDir = "$env:ProgramFiles(x86)\Inno Setup 6\Languages"
           $files = @(
               @{
                   Uri = "$baseUri/Languages/Unofficial/ChineseTraditional.isl"
-                  OutFile = "$downloadDir/ChineseTraditional.isl"
+                  OutFile = "$downloadDir\ChineseTraditional.isl"
               },
               @{
                   Uri = "$baseUri/Languages/Unofficial/ChineseSimplified.isl"
-                  OutFile = "$downloadDir/ChineseSimplified.isl"
+                  OutFile = "$downloadDir\ChineseSimplified.isl"
               }
           )