diff --git a/stepmania/src/RageInputDevice.cpp b/stepmania/src/RageInputDevice.cpp
index 518540c5df..45ec59c05a 100644
--- a/stepmania/src/RageInputDevice.cpp
+++ b/stepmania/src/RageInputDevice.cpp
@@ -305,6 +305,35 @@ DeviceButton StringToDeviceButton( InputDevice device, const CString& s )
 	}
 }
 
+int GetNumDeviceButtons( InputDevice device )
+{
+	switch( device )
+	{
+	case DEVICE_KEYBOARD:	return NUM_KEYS;
+	case DEVICE_JOY1:
+	case DEVICE_JOY2:
+	case DEVICE_JOY3:
+	case DEVICE_JOY4:
+	case DEVICE_JOY5:
+	case DEVICE_JOY6:
+	case DEVICE_JOY7:
+	case DEVICE_JOY8:
+	case DEVICE_JOY9:
+	case DEVICE_JOY10:
+	case DEVICE_JOY11:
+	case DEVICE_JOY12:
+	case DEVICE_JOY13:
+	case DEVICE_JOY14:
+	case DEVICE_JOY15:
+	case DEVICE_JOY16:	return NUM_JOYSTICK_BUTTONS;
+	case DEVICE_PUMP1:
+	case DEVICE_PUMP2:	return NUM_PUMP_PAD_BUTTONS;
+	case DEVICE_MIDI:	return NUM_MIDI_CHANNELS;
+	case DEVICE_PARA1:	return NUM_PARA_PAD_BUTTONS;
+	default:	ASSERT_M(0,ssprintf("%d",device));	return 0;
+	}
+};
+
 CString DeviceInput::toString() const
 {
 	if( device == DEVICE_NONE )
diff --git a/stepmania/src/RageInputDevice.h b/stepmania/src/RageInputDevice.h
index 481f8ef403..ea2307a82c 100644
--- a/stepmania/src/RageInputDevice.h
+++ b/stepmania/src/RageInputDevice.h
@@ -300,34 +300,8 @@ typedef int DeviceButton;
 //CString DeviceButtonToString( InputDevice device, DeviceButton i );
 //DeviceButton StringToDeviceButton( InputDevice device, const CString& s );
 
-inline int GetNumDeviceButtons( InputDevice device )
-{
-	switch( device )
-	{
-	case DEVICE_KEYBOARD:	return NUM_KEYS;
-	case DEVICE_JOY1:
-	case DEVICE_JOY2:
-	case DEVICE_JOY3:
-	case DEVICE_JOY4:
-	case DEVICE_JOY5:
-	case DEVICE_JOY6:
-	case DEVICE_JOY7:
-	case DEVICE_JOY8:
-	case DEVICE_JOY9:
-	case DEVICE_JOY10:
-	case DEVICE_JOY11:
-	case DEVICE_JOY12:
-	case DEVICE_JOY13:
-	case DEVICE_JOY14:
-	case DEVICE_JOY15:
-	case DEVICE_JOY16:	return NUM_JOYSTICK_BUTTONS;
-	case DEVICE_PUMP1:
-	case DEVICE_PUMP2:	return NUM_PUMP_PAD_BUTTONS;
-	case DEVICE_MIDI:	return NUM_MIDI_CHANNELS;
-	case DEVICE_PARA1:	return NUM_PARA_PAD_BUTTONS;
-	default:	ASSERT(0);	return 0;
-	}
-};
+int GetNumDeviceButtons( InputDevice device );
+
 const int MAX_DEVICE_BUTTONS = NUM_KEYS;
 const DeviceButton DEVICE_BUTTON_INVALID = MAX_DEVICE_BUTTONS+1;