diff -Naurp gcc/config/avr/avr.c gcc/config/avr/avr.c
--- gcc/config/avr/avr.c	2011-10-28 15:06:06.000000000 +0530
+++ gcc/config/avr/avr.c	2011-10-28 15:10:36.000000000 +0530
@@ -3474,8 +3474,8 @@ out_movhi_mr_r (rtx insn, rtx op[], int 
 		    AS2 (out,%m0-%2,%A1));
 	}
       if (AVR_XMEGA)
-        return *l = 4, (AS2 (sts,%A0,%A1) CR_TAB
-			AS2 (sts,%B0,%B1));
+        return *l = 4, (AS2 (sts,%m0,%A1) CR_TAB
+			AS2 (sts,%m0+1,%B1));
       else
       return *l = 4, (AS2 (sts,%m0+1,%B1) CR_TAB
 		      AS2 (sts,%m0,%A1));