diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9cf00d2..7e4c6b5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,6 +17,7 @@ jobs:
           cmake -S test -B build/ \
           -G "Unix Makefiles" \
           -DCMAKE_BUILD_TYPE=Debug \
+          -DUNITTEST=1 \
           -DCMAKE_C_FLAGS='--coverage -Wall -Wextra -Werror'
           make -C build/ all
       - name: Test