diff --git a/desmume/src/addons/gbagame.cpp b/desmume/src/addons/gbagame.cpp
index fe68b6ba4..f90890d42 100644
--- a/desmume/src/addons/gbagame.cpp
+++ b/desmume/src/addons/gbagame.cpp
@@ -23,6 +23,7 @@
 
 #include "../addons.h"
 #include "../mem.h"
+#include "../MMU.h"
 
 u8		*GBArom = NULL;
 
@@ -68,16 +69,22 @@ void GBAgame_write32(u32 adr, u32 val) {}
 u8   GBAgame_read08(u32 adr)
 { 
 	//INFO("Read08 at 0x%08X value 0x%02X\n", adr, (u8)T1ReadByte(GBArom, (adr - 0x08000000)));
+	if ( (adr >= 0x08000004) && (adr < 0x080000A0) )
+		return MMU.MMU_MEM[0][0xFF][(adr +0x1C) & MMU.MMU_MASK[0][0xFF]];
 	return (u8)T1ReadByte(GBArom, (adr - 0x08000000));
 }
 u16  GBAgame_read16(u32 adr)
 { 
 	//INFO("Read16 at 0x%08X value 0x%04X\n", adr, (u16)T1ReadWord(GBArom, (adr - 0x08000000)));
+	if ( (adr >= 0x08000004) && (adr < 0x080000A0) )
+		return T1ReadWord(MMU.MMU_MEM[0][0xFF], (adr +0x1C) & MMU.MMU_MASK[0][0xFF]);  
 	return (u16)T1ReadWord(GBArom, (adr - 0x08000000));
 }
 u32  GBAgame_read32(u32 adr)
 { 
 	//INFO("Read32 at 0x%08X value 0x%08X\n", adr, (u32)T1ReadLong(GBArom, (adr - 0x08000000)));
+	if ( (adr >= 0x08000004) && (adr < 0x080000A0) )
+		return T1ReadLong(MMU.MMU_MEM[0][0xFF], (adr +0x1C) & MMU.MMU_MASK[0][0xFF]);
 	return (u32)T1ReadLong(GBArom, (adr - 0x08000000));
 }
 void GBAgame_info(char *info) { strcpy(info, "GBA game in slot"); };
diff --git a/desmume/src/common.h b/desmume/src/common.h
index c2b7e755c..d0f121ce5 100644
--- a/desmume/src/common.h
+++ b/desmume/src/common.h
@@ -51,7 +51,7 @@ extern u8	gba_header_data_0x04[156];
 	// About GBA game in slot (only for use together with NDS + GBA): 
 	// in real BIOS 9 at offset 0x0020 placed compressed logo 
 	// for comparing with logo in header GBA cartridge. 
-	// so, GBA game in slot work now if using only real BIOS.
+	// so, GBA game in slot work now.
 	// Later need make loading this table in BIOS memory (from gba_header_data_0x04)
 	//
 	// in windows ports: