diff --git a/.github/workflows/c-flexpret-tests.yml b/.github/workflows/c-flexpret-tests.yml
index d6c4eb9ad4..fb045be8e1 100644
--- a/.github/workflows/c-flexpret-tests.yml
+++ b/.github/workflows/c-flexpret-tests.yml
@@ -45,7 +45,7 @@ jobs:
         if: ${{ inputs.runtime-ref }}
       - name: Run FlexPRET smoke tests
         run: |
-          cd "$FP_DIR" && source env.bash && cd -
+          source $FP_DIR/env.bash
           ./gradlew core:integrationTest \
             --tests org.lflang.tests.runtime.CFlexPRETTest.* \
             core:integrationTestCodeCoverageReport
diff --git a/core/src/main/resources/lib/c/reactor-c b/core/src/main/resources/lib/c/reactor-c
index f5052600d2..862e0b9617 160000
--- a/core/src/main/resources/lib/c/reactor-c
+++ b/core/src/main/resources/lib/c/reactor-c
@@ -1 +1 @@
-Subproject commit f5052600d29d8d749802cb0c81da0216c4e79606
+Subproject commit 862e0b9617ca55b4fe5f0b2248c63846a8630d3d