diff --git a/.github/workflows/echo-rs-ci.yml b/.github/workflows/echo-rs-ci.yml
index ceedf5f..49f4559 100644
--- a/.github/workflows/echo-rs-ci.yml
+++ b/.github/workflows/echo-rs-ci.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Build
         run: cargo build --verbose
       - name: test
-        run: python3 gnu_cat_tests/test.py -e /bin/cat -b target/debug/cat-rs
+        run: python3 gnu_cat_tests/test.py -c /bin/cat -b target/debug/cat-rs
       - name: Clippy
         run: cargo clippy --verbose -- -D warnings
       - name: Audit