diff --git a/gtsam/3rdparty/metis-5.1.0/CMakeLists.txt b/gtsam/3rdparty/metis-5.1.0/CMakeLists.txt
index 69774c468..e80d3089b 100644
--- a/gtsam/3rdparty/metis-5.1.0/CMakeLists.txt
+++ b/gtsam/3rdparty/metis-5.1.0/CMakeLists.txt
@@ -1,6 +1,9 @@
 cmake_minimum_required(VERSION 2.8)
 project(METIS)
 
+# Add flags for currect directory and below
+add_definitions(-Wno-unknown-pragmas)
+
 set(GKLIB_PATH ${PROJECT_SOURCE_DIR}/GKlib CACHE PATH "path to GKlib")
 set(SHARED FALSE CACHE BOOL "build a shared library")