diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index dbb4d5d2d3..5fe307f0ef 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -685,7 +685,9 @@ jobs:
             fi
           fi
           [ -x ~/venv/bin/activate ] && source ~/venv/bin/activate
-          [[ "${MATRIX_INSTALL_STEPS}" = *'codeset-test'* ]] && export LC_ALL=C
+          export LC_ALL=C
+          export LC_CTYPE=C
+          export LC_NUMERIC=fr_FR.UTF-8
           if [ "${MATRIX_BUILD}" = 'cmake' ]; then
             cmake --build bld --verbose --target "${TEST_TARGET}"
           else
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index bb1b376b27..50fffead46 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -480,10 +480,8 @@ jobs:
         run: |
           TFLAGS="-j20 ${TFLAGS}"
           source ~/venv/bin/activate
-          if [[ "${MATRIX_INSTALL_STEPS}" = *'codeset-test'* ]]; then
-            export LC_CTYPE=C
-            export LC_NUMERIC=fr_FR.UTF-8
-          fi
+          export LC_CTYPE=C
+          export LC_NUMERIC=fr_FR.UTF-8
           rm -f ~/.curlrc
           if [ "${MATRIX_BUILD}" = 'cmake' ]; then
             cmake --build bld --verbose --target "${TEST_TARGET}"