diff --git a/CHANGES b/CHANGES
index 93085a05c..b21e247c0 100644
--- a/CHANGES
+++ b/CHANGES
@@ -6,6 +6,7 @@ Emulation fixes:
  - GB Audio: Deschedule channel 3 when disabled (fixes mgba.io/i/1463)
  - GB Audio: Deschedule channel 1 when disabled by sweep (fixes mgba.io/i/1467)
  - GBA Memory: Fix STM/LDM to invalid VRAM
+ - GB: Fix savedata initialization (fixes mgba.io/i/1473, mgba.io/i/1478)
 Other fixes:
  - Switch: Fix threading-related crash on second launch
  - Qt: Fix FPS target maxing out at 59.727 (fixes mgba.io/i/1421)
diff --git a/src/gb/gb.c b/src/gb/gb.c
index 5f5178a90..3c2dfdad0 100644
--- a/src/gb/gb.c
+++ b/src/gb/gb.c
@@ -186,7 +186,7 @@ void GBResizeSram(struct GB* gb, size_t size) {
 					vf->write(vf, extdataBuffer, vfSize & 0xFF);
 				}
 				gb->memory.sram = vf->map(vf, size, MAP_WRITE);
-				memset(&gb->memory.sram[gb->sramSize], 0xFF, size - gb->sramSize);
+				memset(&gb->memory.sram[vfSize], 0xFF, size - vfSize);
 			} else if (size > gb->sramSize || !gb->memory.sram) {
 				if (gb->memory.sram) {
 					vf->unmap(vf, gb->memory.sram, gb->sramSize);