diff --git a/libs/ardour/graph.cc b/libs/ardour/graph.cc
index 30c9a167a9..edb5ab37ee 100644
--- a/libs/ardour/graph.cc
+++ b/libs/ardour/graph.cc
@@ -19,7 +19,6 @@
 */
 #include <stdio.h>
 #include <cmath>
-#include <xmmintrin.h>
 
 #include "pbd/compose.h"
 #include "pbd/debug_rt_alloc.h"
diff --git a/libs/ardour/session_process.cc b/libs/ardour/session_process.cc
index 067a91da48..cecbd88f65 100644
--- a/libs/ardour/session_process.cc
+++ b/libs/ardour/session_process.cc
@@ -45,8 +45,6 @@
 
 #include "i18n.h"
 
-#include <xmmintrin.h>
-
 using namespace ARDOUR;
 using namespace PBD;
 using namespace std;