diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6dff3a812..f3fd54a39 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -69,6 +69,8 @@ jobs:
         make IGNORE_ERRORS=m -C $OMR_TARGET/source package/{compile,install,index} -j$(nproc) || make IGNORE_ERRORS=m -C $OMR_TARGET/source package/{compile,install,index} -j1 V=s
     - name: Free disk space
       working-directory: ../../omr
+      env:
+        OMR_TARGET: ${{ matrix.OMR_TARGET }}
       run: |
         df -h
         sudo rm -rf $OMR_TARGET/source/toolchain