1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/lib/csum-copy_64.S b/arch/x86/lib/csum-copy_64.S
index 2419d5fefae3..9734182966f3 100644
--- a/arch/x86/lib/csum-copy_64.S
+++ b/arch/x86/lib/csum-copy_64.S
@@ -196,7 +196,7 @@ ENTRY(csum_partial_copy_generic)
 
         /* handle last odd byte */
 .Lhandle_1:
-        testl $1, %r10d
+        testb $1, %r10b
         jz    .Lende
         xorl  %ebx, %ebx
         source