diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 060a9cd..f7b0f25 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,4 +29,4 @@ jobs:
 
     - name: Run tests
       run: |
-           make -C example roundtrip diff
+           make -C example roundtrip diff TESSERACT=tesseract