diff --git a/gtsam/inference/Ordering.cpp b/gtsam/inference/Ordering.cpp
index 440d2b828..2ac2c0dde 100644
--- a/gtsam/inference/Ordering.cpp
+++ b/gtsam/inference/Ordering.cpp
@@ -25,11 +25,7 @@
 #include <gtsam/3rdparty/CCOLAMD/Include/ccolamd.h>
 
 #ifdef GTSAM_SUPPORT_NESTED_DISSECTION
-#ifdef GTSAM_USE_SYSTEM_METIS
 #include <metis.h>
-#else
-#include <gtsam/3rdparty/metis/include/metis.h>
-#endif
 #endif
 
 using namespace std;
diff --git a/gtsam_unstable/partition/FindSeparator-inl.h b/gtsam_unstable/partition/FindSeparator-inl.h
index 2e48b0d45..5ec8813b9 100644
--- a/gtsam_unstable/partition/FindSeparator-inl.h
+++ b/gtsam_unstable/partition/FindSeparator-inl.h
@@ -24,7 +24,7 @@
 
 extern "C" {
 #include <metis.h>
-#include "metislib.h"
+#include <metislib.h>
 }