diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index 6e24b63..1763a66 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -30,9 +30,9 @@ jobs:
         if: runner.os == 'Windows'
         shell: cmd /C CALL {0}
         run: |
-          echo EPICS_BASE=%EPICS_BASE% >> "%GITHUB_ENV%"
-          echo EPICS_HOST_ARCH=%EPICS_HOST_ARCH% >> "%GITHUB_ENV%"
-          tree "%EPICS_BASE%/bin/%EPICS_HOST_ARCH%"
+          echo EPICS_BASE=%EPICS_BASE%>> "%GITHUB_ENV%"
+          echo EPICS_HOST_ARCH=%EPICS_HOST_ARCH%>> "%GITHUB_ENV%"
+          tree /F "%EPICS_BASE%/bin/%EPICS_HOST_ARCH%"
       - name: Start EPICS IOC
         run: |
           "$EPICS_BASE/bin/$EPICS_HOST_ARCH/caRepeater" &