diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5c2368e7..30195aa4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -346,7 +346,7 @@ jobs:
         run: sudo apt-get update && sudo apt-get install -y clang-20
 
       - name: Include-closure assertions and negative control
-        run: python3 scripts/check_include_closure.py --mode both --compiler clang++-20 --self-test
+        run: python3 scripts/check_include_closure.py --mode both --compiler clang++-20 --self-test --require-all
 
   benchmark:
     runs-on: ubuntu-latest
diff --git a/MobileGL/MG_Test/Purity/CMakeLists.txt b/MobileGL/MG_Test/Purity/CMakeLists.txt
index 59e90d31..587e85f2 100644
--- a/MobileGL/MG_Test/Purity/CMakeLists.txt
+++ b/MobileGL/MG_Test/Purity/CMakeLists.txt
@@ -7,7 +7,7 @@ cmake_minimum_required(VERSION 3.14)
 find_package(Python3 COMPONENTS Interpreter)
 if (Python3_Interpreter_FOUND)
     add_test(NAME MobileGLPurity.IncludeClosure
-             COMMAND ${Python3_EXECUTABLE} ${MGL_ROOT}/scripts/check_include_closure.py --mode text --self-test)
+             COMMAND ${Python3_EXECUTABLE} ${MGL_ROOT}/scripts/check_include_closure.py --mode text --self-test --require-all)
     # ctest -L unit (test.yml:198-203). NO ENVIRONMENT property: it replaces the job env (ARCHITECTURE.md:567).
     set_tests_properties(MobileGLPurity.IncludeClosure PROPERTIES LABELS unit)
 else()