diff --git a/CHANGES b/CHANGES
index e547ab843..8d4c23b5d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -34,6 +34,7 @@ Misc:
  - DS Video: Simplify VRAM mapping
  - DS GX: Reject and log polygons that clip to more than 10 vertices
  - DS Core: Backport symbol loading changes from GBA core (fixes mgba.io/i/1834)
+ - DS I/O: Mark BGCNT registers as readable
 
 0.10.0: (Future)
 Features:
diff --git a/src/ds/io.c b/src/ds/io.c
index fba77d441..4c44a0461 100644
--- a/src/ds/io.c
+++ b/src/ds/io.c
@@ -770,6 +770,10 @@ uint16_t DS9IORead(struct DS* ds, uint32_t address) {
 	case DS_REG_KEYINPUT:
 		return DSIOReadKeyInput(ds);
 	case DS_REG_VCOUNT:
+	case DS9_REG_A_BG0CNT:
+	case DS9_REG_A_BG1CNT:
+	case DS9_REG_A_BG2CNT:
+	case DS9_REG_A_BG3CNT:
 	case DS_REG_DMA0CNT_HI:
 	case DS_REG_DMA1CNT_HI:
 	case DS_REG_DMA2CNT_HI:
@@ -896,6 +900,10 @@ uint16_t DS9IORead(struct DS* ds, uint32_t address) {
 	case DS9_REG_CLIPMTX_RESULT_1D:
 	case DS9_REG_CLIPMTX_RESULT_1E:
 	case DS9_REG_CLIPMTX_RESULT_1F:
+	case DS9_REG_B_BG0CNT:
+	case DS9_REG_B_BG1CNT:
+	case DS9_REG_B_BG2CNT:
+	case DS9_REG_B_BG3CNT:
 		// Handled transparently by the registers
 		break;
 	case DS_REG_AUXSPICNT: