diff --git a/CHANGES b/CHANGES
index f1ac1c151..42b1f040d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2,6 +2,7 @@
 Emulation fixes:
  - GB I/O: Fix incrementing SGB controller when P14 is low (fixes mgba.io/i/2202)
  - GB Video: Render SGB border when unmasking with ATTR/PAL_SET (fixes mgba.io/i/2261)
+ - GBA Memory: Add cursory cartridge open bus emulation (fixes mgba.io/i/2032)
  - GBA SIO: Fix SI value for unattached MULTI mode
  - GBA Video: Fix backdrop color if DISPCNT is first set to 0 (fixes mgba.io/i/2260)
 Other fixes:
diff --git a/src/gba/memory.c b/src/gba/memory.c
index 6a1631c5e..77fe2a36e 100644
--- a/src/gba/memory.c
+++ b/src/gba/memory.c
@@ -375,7 +375,7 @@ static void GBASetActiveRegion(struct ARMCore* cpu, uint32_t address) {
 	wait += waitstatesRegion[REGION_WORKING_RAM];
 
 #define LOAD_WORKING_IRAM LOAD_32(value, address & (SIZE_WORKING_IRAM - 4), memory->iwram);
-#define LOAD_IO value = GBAIORead(gba, address & OFFSET_MASK & ~2) | (GBAIORead(gba, (address & OFFSET_MASK) | 2) << 16);
+#define LOAD_IO value = GBAIORead(gba, address & OFFSET_MASK & ~3) | (GBAIORead(gba, (address & OFFSET_MASK & ~1) | 2) << 16);
 
 #define LOAD_PALETTE_RAM \
 	LOAD_32(value, address & (SIZE_PALETTE_RAM - 4), gba->video.palette); \