diff --git a/lapack/Makefile b/lapack/Makefile
index 2bbb4603f..b328435e5 100644
--- a/lapack/Makefile
+++ b/lapack/Makefile
@@ -1,5 +1,6 @@
 TOPDIR	= ..
 include ../Makefile.system
+override CFLAGS += -fno-tree-vectorize
 
 #SUBDIRS	= laswp getf2 getrf potf2 potrf lauu2 lauum trti2 trtri getrs
 SUBDIRS	= getrf getf2 laswp getrs potrf potf2 lauu2 lauum trti2 trtri trtrs