diff --git a/sysdeps/x86_64/_mcount.S b/sysdeps/x86_64/_mcount.S
index ce4c95f102..1cc4e3065b 100644
--- a/sysdeps/x86_64/_mcount.S
+++ b/sysdeps/x86_64/_mcount.S
@@ -41,7 +41,7 @@ C_LABEL(_mcount)
 
 	/* Setup parameter for __mcount_internal.  */
 	/* selfpc is the return address on the stack.  */
-	movq	48(%rsp),%rsi
+	movq	56(%rsp),%rsi
 	/* Get frompc via the frame pointer.  */
 	movq	8(%rbp),%rdi
 #ifdef PIC