diff --git a/src/setjmp/x32/setjmp.s b/src/setjmp/x32/setjmp.s
index 98f58b8d..d95e4853 100644
--- a/src/setjmp/x32/setjmp.s
+++ b/src/setjmp/x32/setjmp.s
@@ -18,5 +18,5 @@ setjmp:
 	mov %rdx,48(%rdi)
 	mov (%rsp),%rdx         /* save return addr ptr for new rip */
 	mov %rdx,56(%rdi)
-	xor %rax,%rax           /* always return 0 */
+	xor %eax,%eax           /* always return 0 */
 	ret
diff --git a/src/setjmp/x86_64/setjmp.s b/src/setjmp/x86_64/setjmp.s
index 98f58b8d..d95e4853 100644
--- a/src/setjmp/x86_64/setjmp.s
+++ b/src/setjmp/x86_64/setjmp.s
@@ -18,5 +18,5 @@ setjmp:
 	mov %rdx,48(%rdi)
 	mov (%rsp),%rdx         /* save return addr ptr for new rip */
 	mov %rdx,56(%rdi)
-	xor %rax,%rax           /* always return 0 */
+	xor %eax,%eax           /* always return 0 */
 	ret