diff --git a/Makefile.x86_64 b/Makefile.x86_64
index e793a1c2f..f055828a9 100644
--- a/Makefile.x86_64
+++ b/Makefile.x86_64
@@ -12,6 +12,10 @@ ifdef HAVE_SSE3
 ifndef DYNAMIC_ARCH
 CCOMMON_OPT += -msse3
 FCOMMON_OPT += -msse3
+ifdef HAVE_SSSE3
+CCOMMON_OPT += -mssse3
+FCOMMON_OPT += -mssse3
+endif
 endif
 endif