diff --git a/crypto/fipsmodule/bn/asm/x86_64-gcc.c b/crypto/fipsmodule/bn/asm/x86_64-gcc.c
index 4059dcc..49351c1 100644
--- a/crypto/fipsmodule/bn/asm/x86_64-gcc.c
+++ b/crypto/fipsmodule/bn/asm/x86_64-gcc.c
@@ -202,7 +202,8 @@
       "	adcq	(%5,%2,8),%0	\n"
       "	movq	%0,(%3,%2,8)	\n"
       "	lea	1(%2),%2	\n"
-      "	loop	1b		\n"
+      "	dec	%1		\n"
+      "	jnz	1b		\n"
       "	sbbq	%0,%0		\n"
       : "=&r"(ret), "+c"(n), "+r"(i)
       : "r"(rp), "r"(ap), "r"(bp)
@@ -229,7 +230,8 @@
       "	sbbq	(%5,%2,8),%0	\n"
       "	movq	%0,(%3,%2,8)	\n"
       "	lea	1(%2),%2	\n"
-      "	loop	1b		\n"
+      "	dec	%1		\n"
+      "	jnz	1b		\n"
       "	sbbq	%0,%0		\n"
       : "=&r"(ret), "+c"(n), "+r"(i)
       : "r"(rp), "r"(ap), "r"(bp)