diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index e1076b161..8fe4502e4 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -20,6 +20,9 @@ on:
       common-files:
         type: boolean
         default: true
+      launchdf:
+        type: boolean
+        default: false
 
 jobs:
   build-win64:
@@ -37,6 +40,7 @@ jobs:
           submodules: true
           fetch-depth: 0
       - name: Get 3rd party SDKs
+        if: inputs.launchdf
         uses: actions/checkout@v3
         with:
           repository: DFHack/3rdparty
@@ -53,7 +57,7 @@ jobs:
             win-msvc
       - name: Cross-compile
         env:
-          CMAKE_EXTRA_ARGS: '-DBUILD_STONESENSE:BOOL=1 -DBUILD_DOCS:BOOL=${{ inputs.common-files }} -DINSTALL_DATA_FILES:BOOL=${{ inputs.common-files }} -DINSTALL_SCRIPTS:BOOL=${{ inputs.common-files }} -DBUILD_DFLAUNCH:BOOL=1'
+          CMAKE_EXTRA_ARGS: '-DBUILD_STONESENSE:BOOL=1 -DBUILD_DOCS:BOOL=${{ inputs.common-files }} -DINSTALL_DATA_FILES:BOOL=${{ inputs.common-files }} -DINSTALL_SCRIPTS:BOOL=${{ inputs.common-files }} -DBUILD_DFLAUNCH:BOOL=${{ inputs.launchdf }}'
         run: |
           cd build
           bash -x build-win64-from-linux.sh
diff --git a/.github/workflows/steam-deploy.yml b/.github/workflows/steam-deploy.yml
index 006c05ec1..ef1433212 100644
--- a/.github/workflows/steam-deploy.yml
+++ b/.github/workflows/steam-deploy.yml
@@ -39,6 +39,7 @@ jobs:
       cache-id: release
       cache-readonly: true
       common-files: false
+      launchdf: true
     secrets: inherit
 
   depot-linux64: