diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 0869aaa..188d5d5 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -251,6 +251,8 @@
     target_include_directories(test_suite_${data_name}
         PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
         PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../library)
+    # Request C11, which is needed for memory poisoning tests
+    set_target_properties(test_suite_${data_name} PROPERTIES C_STANDARD 11)
 
     if(${data_name} MATCHES ${SKIP_TEST_SUITES_REGEX})
         message(STATUS "The test suite ${data_name} will not be executed.")