diff --git a/ChangeLog b/ChangeLog
index 3bd975a..0ea75d3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2013-12-11  Niibe Yutaka  <gniibe@fsij.org>
+
+	* regnual/sys.c (entry): Fix relocation calculation.
+
 2013-11-27  Niibe Yutaka  <gniibe@fsij.org>
 
 	* src/stm32f103.h (AFIO_MAPR_SWJ_CFG_DISABLE): New.
diff --git a/regnual/sys.c b/regnual/sys.c
index 6b8bfda..f88f054 100644
--- a/regnual/sys.c
+++ b/regnual/sys.c
@@ -42,7 +42,7 @@ void entry (void)
 		"add	r1, r0\n\t" /* relocate bss_start */
 		"ldr	r4, .L00+8\n\t"
 		"ldr	r2, [r3, r4]\n"
-		"add	r1, r0\n\t" /* relocate bss_end */
+		"add	r2, r0\n\t" /* relocate bss_end */
 		/* Clear BSS.  */
 		"mov	r0, #0\n\t"
 	"0:\n\t"