diff --git a/CMakeLists.txt b/CMakeLists.txt
index 67c979760..bc580b925 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@ if( CMAKE_CXX_COMPILER_ID MATCHES "Clang" )
     set( CMAKE_C_FLAGS_RELEASE          "-O4 -DNDEBUG" )
     set( CMAKE_C_FLAGS_RELWITHDEBINFO   "-O2 -g" )
 
-    set( CMAKE_CXX_FLAGS                "${CMAKE_CXX_FLAGS} -Wall -std=c++11" )
+    set( CMAKE_CXX_FLAGS                "${CMAKE_CXX_FLAGS} -Weverything -std=c++11" )
     set( CMAKE_CXX_FLAGS_DEBUG          "-g" )
     set( CMAKE_CXX_FLAGS_MINSIZEREL     "-Os -DNDEBUG" )
     set( CMAKE_CXX_FLAGS_RELEASE        "-O4 -DNDEBUG" )