diff --git a/CHANGES b/CHANGES
index 09f0f22cb..c8cba4bb6 100644
--- a/CHANGES
+++ b/CHANGES
@@ -17,6 +17,7 @@ Features:
  - "Headless" frontend for running tests, automation, etc.
 Emulation fixes:
  - ARM: Add framework for coprocessor support
+ - GB Memory: Initialize HRAM when skipping BIOS in GBC mode (fixes mgba.io/i/3420)
  - GB Serialize: Add missing Pocket Cam state to savestates
  - GB Video: Implement DMG-style sprite ordering
  - GBA: Unhandled bkpt should be treated as an undefined exception
diff --git a/src/gb/gb.c b/src/gb/gb.c
index 102e4cfa2..790d37c23 100644
--- a/src/gb/gb.c
+++ b/src/gb/gb.c
@@ -28,6 +28,25 @@ static const uint8_t _knownHeader[4] = {0xCE, 0xED, 0x66, 0x66};
 static const uint8_t _knownHeaderSachen[4] = {0x7C, 0xE7, 0xC0, 0x00};
 static const uint8_t _registeredTrademark[] = {0x3C, 0x42, 0xB9, 0xA5, 0xB9, 0xA5, 0x42, 0x3C};
 
+static const uint8_t _cgbBiosHram[GB_SIZE_HRAM] = {
+	0xCE, 0xED, 0x66, 0x66, 0xCC, 0x0D, 0x00, 0x0B,
+	0x03, 0x73, 0x00, 0x83, 0x00, 0x0C, 0x00, 0x0D,
+	0x00, 0x08, 0x11, 0x1F, 0x88, 0x89, 0x00, 0x0E,
+	0xDC, 0xCC, 0x6E, 0xE6, 0xDD, 0xDD, 0xD9, 0x99,
+	0xBB, 0xBB, 0x67, 0x63, 0x6E, 0x0E, 0xEC, 0xCC,
+	0xDD, 0xDC, 0x99, 0x9F, 0xBB, 0xB9, 0x33, 0x3E,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x71, 0x02, 0x4D, 0x01, 0xC1, 0xFF,
+	0x0D, 0x00, 0xD3, 0x05, 0xF9, 0x00, 0x00,
+};
+
 #define DMG0_BIOS_CHECKSUM 0xC2F5CC97
 #define DMG_BIOS_CHECKSUM 0x59C8598E
 #define MGB_BIOS_CHECKSUM 0xE6920754
@@ -746,6 +765,7 @@ void GBSkipBIOS(struct GB* gb) {
 			gb->memory.io[GB_REG_SVBK] = 0xFF;
 			GBVideoDisableCGB(&gb->video);
 		}
+		memcpy(gb->memory.hram, _cgbBiosHram, sizeof(gb->memory.hram));
 		nextDiv = 0xC;
 		break;
 	}