diff --git a/memmap.cpp b/memmap.cpp
index 655ebc4f..9131a88b 100644
--- a/memmap.cpp
+++ b/memmap.cpp
@@ -3184,6 +3184,10 @@ void CMemory::Map_SA1LoROMMap (void)
 	for (int c = 0x600; c < 0x700; c++)
 		SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_BWRAM_BITMAP;
 
+	// WRAM is inaccessable
+	for (int c = 0x7e0; c < 0x800; c++)
+		SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_NONE;
+
 	BWRAM = SRAM;
 }
 
@@ -3226,6 +3230,10 @@ void CMemory::Map_BSSA1LoROMMap(void)
 	for (int c = 0x600; c < 0x700; c++)
 		SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_BWRAM_BITMAP;
 
+	// WRAM is inaccessable
+	for (int c = 0x7e0; c < 0x800; c++)
+		SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_NONE;
+
 	BWRAM = SRAM;
 }