diff --git a/src/r_draw_pal.cpp b/src/r_draw_pal.cpp
index a6b6a7946..f700be7e2 100644
--- a/src/r_draw_pal.cpp
+++ b/src/r_draw_pal.cpp
@@ -33,6 +33,7 @@
 **
 */
 
+#include <xmmintrin.h>
 #include "templates.h"
 #include "doomtype.h"
 #include "doomdef.h"