diff --git a/cmake/modules/unittest.cmake b/cmake/modules/unittest.cmake
index 6565e89aec53a77..eac854bb32698b3 100644
--- a/cmake/modules/unittest.cmake
+++ b/cmake/modules/unittest.cmake
@@ -130,6 +130,10 @@ if(CONFIG_COVERAGE)
   target_link_libraries(testbinary PRIVATE $<TARGET_PROPERTY:linker,coverage>)
 endif()
 
+if (CONFIG_COMPILER_WARNINGS_AS_ERRORS)
+  target_compile_options(test_interface INTERFACE $<TARGET_PROPERTY:compiler,warnings_as_errors>)
+endif()
+
 if(LIBS)
   message(FATAL_ERROR "This variable is not supported, see SOURCES instead")
 endif()