diff --git a/CHANGES b/CHANGES
index 1ee88d5fd..028537466 100644
--- a/CHANGES
+++ b/CHANGES
@@ -8,6 +8,7 @@ Emulation fixes:
  - GBA Memory: Make VRAM access stalls only apply to BG RAM
  - GBA SIO: Fix SIOCNT SI pin value after attaching player 2 (fixes mgba.io/i/2805)
  - GBA SIO: Fix unconnected normal mode SIOCNT SI bit (fixes mgba.io/i/2810)
+ - GBA SIO: Normal mode transfers with no clock should not finish (fixes mgba.io/i/2811)
  - GBA Timers: Cascading timers don't tick when disabled (fixes mgba.io/i/2812)
  - GBA Video: Disable BG target 1 blending when OBJ blending (fixes mgba.io/i/2722)
 Other fixes:
diff --git a/src/gba/sio/lockstep.c b/src/gba/sio/lockstep.c
index db92c50a5..3ea1b5cc9 100644
--- a/src/gba/sio/lockstep.c
+++ b/src/gba/sio/lockstep.c
@@ -532,7 +532,7 @@ static uint16_t GBASIOLockstepNodeNormalWriteRegister(struct GBASIODriver* drive
 				}
 			}
 		}
-		if (value & 0x0080) {
+		if ((value & 0x0081) == 0x0081) {
 			if (!node->id) {
 				// Frequency
 				int32_t cycles;
@@ -559,7 +559,7 @@ static uint16_t GBASIOLockstepNodeNormalWriteRegister(struct GBASIODriver* drive
 					value &= ~0x0080;
 				}
 			} else {
-
+				// TODO
 			}
 		}
 	} else if (address == REG_SIODATA32_LO) {