diff --git a/Mac/MainWindow/Timeline/TimelineTableRowView.swift b/Mac/MainWindow/Timeline/TimelineTableRowView.swift
index 692f0a19c..162fb0681 100644
--- a/Mac/MainWindow/Timeline/TimelineTableRowView.swift
+++ b/Mac/MainWindow/Timeline/TimelineTableRowView.swift
@@ -10,6 +10,10 @@ import AppKit
 
 class TimelineTableRowView : NSTableRowView {
 
+	override var isOpaque: Bool {
+		return true
+	}
+
 	init() {
 		super.init(frame: NSRect.zero)
 	}
diff --git a/Mac/MainWindow/Timeline/TimelineTableView.swift b/Mac/MainWindow/Timeline/TimelineTableView.swift
index 9d83b3778..fb3639134 100644
--- a/Mac/MainWindow/Timeline/TimelineTableView.swift
+++ b/Mac/MainWindow/Timeline/TimelineTableView.swift
@@ -24,6 +24,10 @@ class TimelineTableView: NSTableView {
 
 	// MARK: - NSView
 
+	override var isOpaque: Bool {
+		return true
+	}
+	
 	override func viewWillStartLiveResize() {
 		if let scrollView = self.enclosingScrollView {
 			scrollView.hasVerticalScroller = false