diff --git a/.github/workflows/c-flexpret-tests.yml b/.github/workflows/c-flexpret-tests.yml
index 95a1307365..7b01eb9e45 100644
--- a/.github/workflows/c-flexpret-tests.yml
+++ b/.github/workflows/c-flexpret-tests.yml
@@ -45,6 +45,7 @@ jobs:
         if: ${{ inputs.runtime-ref }}
       - name: Run FlexPRET smoke tests
         run: |
+          cd $FP_PATH && source env.bash
           ./gradlew core:integrationTest \
             --tests org.lflang.tests.runtime.CFlexPRETTest.* \
             core:integrationTestCodeCoverageReport