diff --git a/kernel/x86_64/KERNEL b/kernel/x86_64/KERNEL
index bea7036c2..f8278c3b4 100644
--- a/kernel/x86_64/KERNEL
+++ b/kernel/x86_64/KERNEL
@@ -405,7 +405,7 @@ DGEMVNKERNEL = dgemv_n.S
 endif
 
 ifndef DGEMVTKERNEL
-DGEMVTKERNEL = dgemv_t.S
+DGEMVTKERNEL = dgemv_t_4.c
 endif
 
 ifndef CGEMVNKERNEL