diff --git a/trunk/bootrom/build/libraries/os/ARM11/os_irqHandler.c b/trunk/bootrom/build/libraries/os/ARM11/os_irqHandler.c
index d7cc022..b4f29ce 100644
--- a/trunk/bootrom/build/libraries/os/ARM11/os_irqHandler.c
+++ b/trunk/bootrom/build/libraries/os/ARM11/os_irqHandler.c
@@ -37,6 +37,7 @@ asm void osIrqHandler( void )
 
         INASM_EXTERN( osIntrTable )
 
+        sub     lr, lr, #4                      // 復帰アドレス調整
         stmfd   sp!, { r0-r3,r12,lr }
         stmfd   sp!, { lr }                     // save LR
 
diff --git a/trunk/bootrom/build/libraries/os/ARM9/os_irqHandler.c b/trunk/bootrom/build/libraries/os/ARM9/os_irqHandler.c
index 622804c..1538172 100644
--- a/trunk/bootrom/build/libraries/os/ARM9/os_irqHandler.c
+++ b/trunk/bootrom/build/libraries/os/ARM9/os_irqHandler.c
@@ -47,6 +47,7 @@ asm void osIrqHandler( void )
 
         INASM_EXTERN( osIntrTable )
 
+        sub     lr, lr, #4                      // 復帰アドレス調整
         stmfd   sp!, { r0-r3,r12,lr }
         stmfd   sp!, { lr }                     // save LR