diff --git a/CMakeLists.txt b/CMakeLists.txt
index a4423cd0c..26e4baa37 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,7 @@ endif( ${CMAKE_SYSTEM_NAME} MATCHES "SunOS" )
 
 if(CMAKE_COMPILER_IS_GNUCXX)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ansi -fno-common -fno-exceptions -fno-rtti")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DQT_NO_KEYWORDS -DQT_NO_EXCEPTIONS -DQT_NO_STL")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DQT_NO_KEYWORDS -DQT_NO_EXCEPTIONS -DQT_NO_STL -DQT_STRICT_ITERATORS")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wundef -Wold-style-cast -Wnon-virtual-dtor -Wcast-align")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wpointer-arith -Wformat-security -Woverloaded-virtual -Wno-long-long")