diff --git a/src/Limelight.h b/src/Limelight.h
index e622bea..5e1bbcd 100644
--- a/src/Limelight.h
+++ b/src/Limelight.h
@@ -773,6 +773,7 @@ int LiSendMultiControllerEvent(short controllerNumber, short activeGamepadMask,
 #define LI_CTYPE_XBOX     0x01
 #define LI_CTYPE_PS       0x02
 #define LI_CTYPE_NINTENDO 0x03
+#define LI_CTYPE_STEAM    0x04 // Valve Steam Controller (Xbox-style layout plus dual touchpads, gyro/accel and grip buttons)
 #define LI_CCAP_ANALOG_TRIGGERS 0x01 // Reports values between 0x00 and 0xFF for trigger axes
 #define LI_CCAP_RUMBLE          0x02 // Can rumble in response to ConnListenerRumble() callback
 #define LI_CCAP_TRIGGER_RUMBLE  0x04 // Can rumble triggers in response to ConnListenerRumbleTriggers() callback