diff --git a/CMakeLists.txt b/CMakeLists.txt
index d4ebadc9..996ef4a9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -153,12 +153,6 @@ else()
     option(Werror "Treat warnings as errors" OFF)
 endif()
 
-if (Werror)
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
-endif()
-
-
 # Mir uses boost, which does not like Qt defining macros named "signals" and "slots"
 add_definitions(-DQT_NO_KEYWORDS)