diff --git a/macos/Ghostty.xcodeproj/project.pbxproj b/macos/Ghostty.xcodeproj/project.pbxproj
index eb8c236e7..d0942cad2 100644
--- a/macos/Ghostty.xcodeproj/project.pbxproj
+++ b/macos/Ghostty.xcodeproj/project.pbxproj
@@ -68,6 +68,7 @@
 		AEF9CE242B6AD07A0017E195 /* TerminalToolbar.swift in Sources */ = {isa = PBXBuildFile; fileRef = AEF9CE232B6AD07A0017E195 /* TerminalToolbar.swift */; };
 		C159E81D2B66A06B00FDFE9C /* OSColor+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = C159E81C2B66A06B00FDFE9C /* OSColor+Extension.swift */; };
 		C159E89D2B69A2EF00FDFE9C /* OSColor+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = C159E81C2B66A06B00FDFE9C /* OSColor+Extension.swift */; };
+		C1F26EA72B738B9900404083 /* NSView+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = C1F26EA62B738B9900404083 /* NSView+Extension.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -128,6 +129,7 @@
 		A5FEB2FF2ABB69450068369E /* main.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = main.swift; sourceTree = "<group>"; };
 		AEF9CE232B6AD07A0017E195 /* TerminalToolbar.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TerminalToolbar.swift; sourceTree = "<group>"; };
 		C159E81C2B66A06B00FDFE9C /* OSColor+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "OSColor+Extension.swift"; sourceTree = "<group>"; };
+		C1F26EA62B738B9900404083 /* NSView+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NSView+Extension.swift"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -193,6 +195,7 @@
 				A59630962AEE163600D64628 /* HostingWindow.swift */,
 				A59FB5D02AE0DEA7009128F3 /* MetalView.swift */,
 				C159E81C2B66A06B00FDFE9C /* OSColor+Extension.swift */,
+				C1F26EA62B738B9900404083 /* NSView+Extension.swift */,
 				A5CEAFDA29B8005900646FDA /* SplitView */,
 			);
 			path = Helpers;
@@ -468,6 +471,7 @@
 				A59FB5CF2AE0DB50009128F3 /* InspectorView.swift in Sources */,
 				A5D0AF3D2B37804400D21823 /* CodableBridge.swift in Sources */,
 				A5D0AF3B2B36A1DE00D21823 /* TerminalRestorable.swift in Sources */,
+				C1F26EA72B738B9900404083 /* NSView+Extension.swift in Sources */,
 				A596309C2AEE1C9E00D64628 /* TerminalController.swift in Sources */,
 				A56D58892ACDE6CA00508D2C /* ServiceProvider.swift in Sources */,
 				A51BFC222B2FB6B400E92F16 /* AboutView.swift in Sources */,
diff --git a/macos/Sources/Features/Terminal/TerminalWindow.swift b/macos/Sources/Features/Terminal/TerminalWindow.swift
index e2d14ad1f..457b3bd08 100644
--- a/macos/Sources/Features/Terminal/TerminalWindow.swift
+++ b/macos/Sources/Features/Terminal/TerminalWindow.swift
@@ -33,7 +33,22 @@ class TerminalWindow: NSWindow {
     
     // The tab bar controller ID from macOS
     static private let TabBarController = NSUserInterfaceItemIdentifier("_tabBarController")
-    
+
+    // Look through the titlebar's view hierarchy and hide any of the internal
+    // views used to create a separator between the title/toolbar and unselected
+    // tabs in the tab bar.
+    override func updateConstraintsIfNeeded() {
+        super.updateConstraintsIfNeeded()
+
+        guard let titlebarContainer = contentView?.superview?.subviews.first(where: {
+            $0.className == "NSTitlebarContainerView"
+        }) else { return }
+
+        for v in titlebarContainer.descendants(withClassName: "NSTitlebarSeparatorView") {
+            v.isHidden = true
+        }
+    }
+
     /// This is called by titlebarTabs changing so that we can setup the rest of our window
     private func changedTitlebarTabs(to newValue: Bool) {
         self.titlebarAppearsTransparent = newValue
@@ -73,7 +88,7 @@ class TerminalWindow: NSWindow {
         guard let titlebarContainer = contentView?.superview?.subviews.first(where: {
             $0.className == "NSTitlebarContainerView"
         }) else { return }
-        
+
         titlebarContainer.wantsLayer = true
         titlebarContainer.layer?.backgroundColor = color
     }
@@ -137,7 +152,7 @@ class TerminalWindow: NSWindow {
         guard let toolbarView = titlebarView.subviews.first(where: {
             $0.className == "NSToolbarView"
         }) else { return }
-        
+
         addWindowButtonsBackdrop(titlebarView: titlebarView, toolbarView: toolbarView)
         guard let windowButtonsBackdrop = windowButtonsBackdrop else { return }
         
@@ -190,24 +205,13 @@ class TerminalWindow: NSWindow {
         view.heightAnchor.constraint(equalTo: toolbarView.heightAnchor).isActive = true
         view.wantsLayer = true
         
-        let topBorder = NSView()
-        view.addSubview(topBorder)
-        topBorder.translatesAutoresizingMaskIntoConstraints = false
-        topBorder.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
-        topBorder.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true
-        topBorder.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
-        topBorder.bottomAnchor.constraint(equalTo: view.topAnchor, constant: 1).isActive = true
-        topBorder.wantsLayer = true
-        
         // This is jank but this makes the background color for light themes on the button
         // backdrop look MUCH better. I couldn't figure out a perfect color to use that works
         // for both so we just check the appearance.
         if effectiveAppearance.name == .aqua {
             view.layer?.backgroundColor = CGColor(genericGrayGamma2_2Gray: 0.95, alpha: 1)
-            topBorder.layer?.backgroundColor = CGColor(genericGrayGamma2_2Gray: 0.0, alpha: 0.2)
         } else {
             view.layer?.backgroundColor = CGColor(genericGrayGamma2_2Gray: 0.0, alpha: 0.45)
-            topBorder.layer?.backgroundColor = CGColor(genericGrayGamma2_2Gray: 0.0, alpha: 0.85)
         }
         
         windowButtonsBackdrop = view
diff --git a/macos/Sources/Helpers/NSView+Extension.swift b/macos/Sources/Helpers/NSView+Extension.swift
new file mode 100644
index 000000000..8612c0417
--- /dev/null
+++ b/macos/Sources/Helpers/NSView+Extension.swift
@@ -0,0 +1,18 @@
+import AppKit
+
+extension NSView {
+    /// Recursively finds and returns descendant views that have the given class name.
+    func descendants(withClassName name: String) -> [NSView] {
+        var result = [NSView]()
+
+        for subview in subviews {
+            if String(describing: type(of: subview)) == name {
+                result.append(subview)
+            }
+
+            result += subview.descendants(withClassName: name)
+        }
+
+        return result
+    }
+}