diff --git a/Source/Core/Core/HW/SI.cpp b/Source/Core/Core/HW/SI.cpp
index 610c1faaaa..582632fada 100644
--- a/Source/Core/Core/HW/SI.cpp
+++ b/Source/Core/Core/HW/SI.cpp
@@ -504,7 +504,7 @@ void UpdateDevices()
 
 SIDevices GetDeviceType(int channel)
 {
-	if (channel < 0 || channel > 4)
+	if (channel < 0 || channel > 3)
 		return SIDEVICE_NONE;
 	else
 		return g_Channel[channel].m_pDevice->GetDeviceType();