diff --git a/build/libraries_sysmenu/util/ARM9/src/util.c b/build/libraries_sysmenu/util/ARM9/src/util.c
index 63ede8f9..8a9fd86c 100644
--- a/build/libraries_sysmenu/util/ARM9/src/util.c
+++ b/build/libraries_sysmenu/util/ARM9/src/util.c
@@ -120,8 +120,7 @@ void UTL_GoSleepMode( void )
         OS_RestoreInterrupts( enable );
 
         // スリープ遷移
-    	PM_GoSleepMode( PM_TRIGGER_COVER_OPEN |
-	    				PM_TRIGGER_RTC_ALARM,
+    	PM_GoSleepMode( PM_TRIGGER_COVER_OPEN,
 		    			0,
 			    		0 );
     }