diff --git a/sbe-tool/src/test/c/CMakeLists.txt b/sbe-tool/src/test/c/CMakeLists.txt
index 1134cd2f4f..d5d2a85b53 100644
--- a/sbe-tool/src/test/c/CMakeLists.txt
+++ b/sbe-tool/src/test/c/CMakeLists.txt
@@ -20,6 +20,9 @@ function(sbe_test name)
         PRIVATE ${GTEST_SOURCE_DIR}/googletest/include
         PRIVATE ${C_CODEC_TARGET_DIR}
     )
+    target_compile_options("C${name}" PRIVATE $<$<CXX_COMPILER_ID:AppleClang>:-Werror>)
+    target_compile_options("C${name}" PRIVATE $<$<CXX_COMPILER_ID:Clang>:-Werror>)
+    target_compile_options("C${name}" PRIVATE $<$<CXX_COMPILER_ID:GNU>:-Werror>)
     target_link_libraries("C${name}" ${GTEST_LIBS} ${CMAKE_THREAD_LIBS_INIT})
     add_test(NAME C${name} COMMAND C${name} WORKING_DIRECTORY ${C_CODEC_TARGET_DIR})
     add_dependencies(C${name} gtest)
diff --git a/sbe-tool/src/test/cpp/CMakeLists.txt b/sbe-tool/src/test/cpp/CMakeLists.txt
index c946466424..c3531029e4 100644
--- a/sbe-tool/src/test/cpp/CMakeLists.txt
+++ b/sbe-tool/src/test/cpp/CMakeLists.txt
@@ -20,6 +20,9 @@ function(sbe_test name)
         PRIVATE ${GTEST_SOURCE_DIR}/googletest/include
         PRIVATE ${CXX_CODEC_TARGET_DIR}
     )
+    target_compile_options("${name}" PRIVATE $<$<CXX_COMPILER_ID:AppleClang>:-Werror>)
+    target_compile_options("${name}" PRIVATE $<$<CXX_COMPILER_ID:Clang>:-Werror>)
+    target_compile_options("${name}" PRIVATE $<$<CXX_COMPILER_ID:GNU>:-Werror>)
     target_link_libraries("${name}" sbe ${GTEST_LIBS} ${CMAKE_THREAD_LIBS_INIT})
     add_test(NAME ${name} COMMAND ${name} WORKING_DIRECTORY ${CXX_CODEC_TARGET_DIR})
     add_dependencies(${name} gtest)