diff --git a/OSBindings/Mac/Clock Signal/Documents/MachineDocument.swift b/OSBindings/Mac/Clock Signal/Documents/MachineDocument.swift
index f2f724865..4d89fc503 100644
--- a/OSBindings/Mac/Clock Signal/Documents/MachineDocument.swift	
+++ b/OSBindings/Mac/Clock Signal/Documents/MachineDocument.swift	
@@ -252,6 +252,7 @@ class MachineDocument:
 			machine.clearAllKeys()
 			machine.joystickManager = nil
 		}
+		self.openGLView.releaseMouse()
 	}
 
 	func windowDidBecomeKey(_ notification: Notification) {
@@ -281,6 +282,15 @@ class MachineDocument:
 		}
 	}
 
+	func mouseMoved(_ event: NSEvent) {
+	}
+
+	func mouseUp(_ event: NSEvent) {
+	}
+
+	func mouseDown(_ event: NSEvent) {
+	}
+
 	// MARK: New machine creation
 	@IBOutlet var machinePicker: MachinePicker?
 	@IBOutlet var machinePickerPanel: NSWindow?