diff --git a/src/gba/memory.c b/src/gba/memory.c
index 0e425cd3e..eb4316569 100644
--- a/src/gba/memory.c
+++ b/src/gba/memory.c
@@ -102,7 +102,7 @@ void GBAMemoryDeinit(struct GBA* gba) {
 }
 
 void GBAMemoryReset(struct GBA* gba) {
-	if (gba->memory.rom || gb->fullBios) {
+	if (gba->memory.rom || gba->memory.fullBios) {
 		// Not multiboot
 		if (gba->memory.wram) {
 			mappedMemoryFree(gba->memory.wram, SIZE_WORKING_RAM);