diff --git a/.github/workflows/tests_cmake_t8code.yml b/.github/workflows/tests_cmake_t8code.yml
index 066ff46af2..22e48b2730 100644
--- a/.github/workflows/tests_cmake_t8code.yml
+++ b/.github/workflows/tests_cmake_t8code.yml
@@ -81,7 +81,7 @@ jobs:
       run: export LESS_TEST_OPTION="-DT8CODE_ENABLE_LESS_TESTS=ON"
            && echo LESS_TEST_OPTION="$LESS_TEST_OPTION" >> $GITHUB_ENV
     - name: build config variables
-      run: export CONFIG_OPTIONS="${LESS_TEST_OPTION} -GNinja -DT8CODE_USE_SYSTEM_SC=ON -DT8CODE_USE_SYSTEM_P4EST=ON -DT8CODE_BUILD_PEDANTIC=ON -DT8CODE_BUILD_FORTRAN=$MPI -DT8CODE_ENABLE_MPI=$MPI -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DSC_DIR=$SC_PATH/install/cmake -DP4EST_DIR=$P4EST_PATH/install/cmake"
+      run: export CONFIG_OPTIONS="${LESS_TEST_OPTION} -GNinja -DT8CODE_USE_SYSTEM_SC=ON -DT8CODE_USE_SYSTEM_P4EST=ON -DT8CODE_BUILD_PEDANTIC=ON -DT8CODE_BUILD_FORTRAN_INTERFACE=$MPI -DT8CODE_ENABLE_MPI=$MPI -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DSC_DIR=$SC_PATH/install/cmake -DP4EST_DIR=$P4EST_PATH/install/cmake"
         && echo CONFIG_OPTIONS="$CONFIG_OPTIONS" >> $GITHUB_ENV
     # cmake and test
     - name: Printing MPI compiler info