1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/libcrypto/modes/asm/ghash-x86_64.pl b/src/lib/libcrypto/modes/asm/ghash-x86_64.pl
index 9ce0c38141..4fded507c8 100644
--- a/src/lib/libcrypto/modes/asm/ghash-x86_64.pl
+++ b/src/lib/libcrypto/modes/asm/ghash-x86_64.pl
@@ -285,7 +285,7 @@ $code.=".align	16\n.Louter_loop:\n";
             &shr        ($Zlo,8);
 
             &movz       ($rem[0],&LB($rem[0]));
-            &mov        ($dat,"$j($Xi)")                        if (--$j%4==0);
+            &mov        ($dat,"$j($Xi)")                        if (--$j%4==0 && $j>=0);
             &shr        ($Zhi,8);
 
             &xor        ($Zlo,"-128($Hshr4,$nhi[0],8)");