diff --git a/gtsam/base/Vector.h b/gtsam/base/Vector.h
index 2d333848b..fc543acc3 100644
--- a/gtsam/base/Vector.h
+++ b/gtsam/base/Vector.h
@@ -20,6 +20,11 @@
 
 
 #pragma once
+
+#ifndef MKL_BLAS
+#define MKL_BLAS MKL_DOMAIN_BLAS
+#endif
+
 #include <gtsam/global_includes.h>
 #include <gtsam/3rdparty/Eigen/Eigen/Core>
 #include <iosfwd>