diff --git a/kernel/Makefile.L1 b/kernel/Makefile.L1
index 09337363d..60facf421 100644
--- a/kernel/Makefile.L1
+++ b/kernel/Makefile.L1
@@ -5,6 +5,7 @@ FMAFLAG = -mfma
 endif
 endif
 
+override CFLAGS += -fno-tree-vectorize
 
 ### AMAX ###