diff --git a/desmume/src/MMU.cpp b/desmume/src/MMU.cpp
index 5ce69b56a..857884aa0 100644
--- a/desmume/src/MMU.cpp
+++ b/desmume/src/MMU.cpp
@@ -2124,9 +2124,9 @@ void FASTCALL _MMU_ARM9_write16(u32 adr, u16 val)
 
 			case REG_EXMEMCNT:
 			{
-				u16 oldval = T1ReadWord(MMU.MMU_MEM[ARMCPU_ARM7][0x40], 0x204);
+				u16 remote_proc = T1ReadWord(MMU.MMU_MEM[ARMCPU_ARM7][0x40], 0x204);
 				T1WriteWord(MMU.MMU_MEM[ARMCPU_ARM9][0x40], 0x204, val);
-				T1WriteWord(MMU.MMU_MEM[ARMCPU_ARM7][0x40], 0x204, (val & 0xFF80) | (oldval & 0x7F));
+				T1WriteWord(MMU.MMU_MEM[ARMCPU_ARM7][0x40], 0x204, (val & 0xFF80) | (remote_proc & 0x7F));
 				return;
 			}
 
@@ -3064,8 +3064,8 @@ void FASTCALL _MMU_ARM7_write16(u32 adr, u16 val)
 
 			case REG_EXMEMCNT:
 			{
-				u16 oldval = T1ReadWord(MMU.MMU_MEM[ARMCPU_ARM7][0x40], 0x204);
-				T1WriteWord(MMU.MMU_MEM[ARMCPU_ARM7][0x40], 0x204, (val & 0x7F) | (oldval & 0xFF80));
+				u16 remote_proc = T1ReadWord(MMU.MMU_MEM[ARMCPU_ARM9][0x40], 0x204);
+				T1WriteWord(MMU.MMU_MEM[ARMCPU_ARM7][0x40], 0x204, (val & 0x7F) | (remote_proc & 0xFF80));
 			}
 			return;