diff --git a/thirdparty/breakpad/CMakeLists.txt b/thirdparty/breakpad/CMakeLists.txt
index e88a59813..446175f3c 100644
--- a/thirdparty/breakpad/CMakeLists.txt
+++ b/thirdparty/breakpad/CMakeLists.txt
@@ -7,7 +7,7 @@ set( CMAKE_MODULE_PATH
 )
 
 if( CMAKE_COMPILER_IS_GNUCXX )
-    ADD_DEFINITIONS( -DSTDC_HEADERS -std=gnu++98 )
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++98")
 endif()
 
 if(${CMAKE_BUILD_TYPE} MATCHES "Release")