diff --git a/CHANGES b/CHANGES
index 1274a5fce..5d2105968 100644
--- a/CHANGES
+++ b/CHANGES
@@ -44,6 +44,7 @@ Emulation fixes:
  - GBA Memory: Improve robustness of Matrix memory support
  - GBA Memory: Mark Famicom Mini games 22 through 28 as non-mirroring
  - GBA Memory: Return correct byte for odd ROM open bus addresses
+ - GBA Serialize: Fix alignment check when loading states
  - GBA SIO: Fix copying Normal mode transfer values
  - GBA SIO: Fix Normal mode being totally broken (fixes mgba.io/i/1800)
  - GBA SIO: Fix deseralizing SIO registers
diff --git a/src/gba/serialize.c b/src/gba/serialize.c
index 464cef460..fbb7d99d9 100644
--- a/src/gba/serialize.c
+++ b/src/gba/serialize.c
@@ -154,7 +154,7 @@ bool GBADeserialize(struct GBA* gba, const struct GBASerializedState* state) {
 		LOAD_32(gba->cpu->bankedSPSRs[i], i * sizeof(gba->cpu->bankedSPSRs[0]), state->cpu.bankedSPSRs);
 	}
 	gba->cpu->privilegeMode = gba->cpu->cpsr.priv;
-	uint32_t pcMask = (gba->cpu->executionMode == MODE_THUMB ? WORD_SIZE_THUMB : WORD_SIZE_ARM) - 1;
+	uint32_t pcMask = (gba->cpu->cpsr.t ? WORD_SIZE_THUMB : WORD_SIZE_ARM) - 1;
 	if (gba->cpu->gprs[ARM_PC] & pcMask) {
 		mLOG(GBA_STATE, WARN, "Savestate has unaligned PC and is probably corrupted");
 		gba->cpu->gprs[ARM_PC] &= ~pcMask;