diff --git a/CHANGES b/CHANGES
index 277cc18fb..8b3fa78c1 100644
--- a/CHANGES
+++ b/CHANGES
@@ -22,6 +22,7 @@ Bugfixes:
  - GBA Memory: Fix DMA behavior for SRAM accesses
  - GBA Memory: Fix Store8 to OBJ VRAM
  - GBA Memory: Fix alignment of LDM/STM on SRAM
+ - GBA: Initialize uninitialized pristineRom and pristineRomSize members
 Misc:
  - Qt: Window size command line options are now supported
  - Qt: Increase usability of key mapper
diff --git a/src/gba/gba.c b/src/gba/gba.c
index e092222d2..6a7d1a726 100644
--- a/src/gba/gba.c
+++ b/src/gba/gba.c
@@ -103,6 +103,9 @@ static void GBAInit(struct ARMCore* cpu, struct ARMComponent* component) {
 	gba->hardCrash = true;
 
 	gba->performingDMA = false;
+
+	gba->pristineRom = 0;
+	gba->pristineRomSize = 0;
 }
 
 void GBAUnloadROM(struct GBA* gba) {