diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index 2c44134281..b2ddc66b08 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -229,7 +229,7 @@ jobs:
         # Note the current convention is to use the -S and -B options here to specify source
         # and build directories, but this is only available with CMake 3.13 and higher.
         # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-        run: cmake $GITHUB_WORKSPACE-DHIGHSINT64=on -DHIGHS_NO_DEFAULT_THREADS=ON
+        run: cmake $GITHUB_WORKSPACE -DHIGHSINT64=on -DHIGHS_NO_DEFAULT_THREADS=ON
 
       - name: Build
         working-directory: ${{runner.workspace}}/build