diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8aefbcc..b5f9e82 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,6 @@ else( )
 	add_definitions( -DHAS_REMOTE_API=1 )
 	add_definitions( -DUSE_OS_TZDB=0 )
 	find_package( CURL REQUIRED )
-	include_directories( SYSTEM )
 	include_directories( SYSTEM ${CURL_INCLUDE_DIRS} )
 	set( OPTIONAL_LIBRARIES ${CURL_LIBRARIES} )
 endif( )