diff --git a/Sources/STTextViewAppKit/Gutter/STGutterView.swift b/Sources/STTextViewAppKit/Gutter/STGutterView.swift
index 1d62d86..d37e122 100644
--- a/Sources/STTextViewAppKit/Gutter/STGutterView.swift
+++ b/Sources/STTextViewAppKit/Gutter/STGutterView.swift
@@ -13,7 +13,7 @@ public final class STGutterView: NSView {
     /// Initialized with a textView font value and does not update automatically when
     /// text view font changes.
     @Invalidating(.display)
-    public var font: NSFont = adjustGutterFont(NSFont(descriptor: NSFont.monospacedDigitSystemFont(ofSize: 0, weight: .regular).fontDescriptor.withSymbolicTraits(.condensed), size: 0)!)
+    public var font = adjustGutterFont(NSFont(descriptor: NSFont.monospacedDigitSystemFont(ofSize: 0, weight: .regular).fontDescriptor.withSymbolicTraits(.condensed), size: 0)!)
 
     /// The insets of the ruler view.
     @Invalidating(.display)
@@ -113,7 +113,7 @@ public final class STGutterView: NSView {
     }
 }
 
-internal func adjustGutterFont(_ font: NSFont) -> NSFont {
+private func adjustGutterFont(_ font: NSFont) -> NSFont {
     // https://useyourloaf.com/blog/ios-9-proportional-numbers/
     // https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html
     let features: [[NSFontDescriptor.FeatureKey: Int]] = [
@@ -143,6 +143,5 @@ internal func adjustGutterFont(_ font: NSFont) -> NSFont {
         ]
     ]
 
-    let adjustedFont = NSFont(descriptor: font.fontDescriptor.addingAttributes([.featureSettings: features]), size: max(font.pointSize * 0.9, NSFont.smallSystemFontSize))
-    return adjustedFont ?? font
+    return NSFont(descriptor: font.fontDescriptor.addingAttributes([.featureSettings: features]), size: 0) ?? font
 }
diff --git a/Sources/STTextViewAppKit/STTextView+Gutter.swift b/Sources/STTextViewAppKit/STTextView+Gutter.swift
index 9f138d5..d58924d 100644
--- a/Sources/STTextViewAppKit/STTextView+Gutter.swift
+++ b/Sources/STTextViewAppKit/STTextView+Gutter.swift
@@ -17,7 +17,6 @@ extension STTextView {
         set {
             if gutterView == nil, newValue == true {
                 let gutterView = STGutterView()
-                gutterView.font = adjustGutterFont(font)
                 gutterView.frame.size.width = gutterView.minimumThickness
                 gutterView.selectedLineTextColor = textColor
                 gutterView.highlightSelectedLine = highlightSelectedLine
diff --git a/Sources/STTextViewUIKit/Gutter/STGutterView.swift b/Sources/STTextViewUIKit/Gutter/STGutterView.swift
index 78a3971..8cbd5be 100644
--- a/Sources/STTextViewUIKit/Gutter/STGutterView.swift
+++ b/Sources/STTextViewUIKit/Gutter/STGutterView.swift
@@ -14,7 +14,7 @@ public final class STGutterView: UIView {
     /// Initialized with a textView font value and does not update automatically when
     /// text view font changes.
     @Invalidating(.display)
-    public var font: UIFont = adjustGutterFont(UIFont(descriptor: UIFont.monospacedDigitSystemFont(ofSize: 0, weight: .regular).fontDescriptor.withSymbolicTraits(.traitCondensed)!, size: 0))
+    public var font = adjustGutterFont(UIFont(descriptor: UIFont.monospacedDigitSystemFont(ofSize: 0, weight: .regular).fontDescriptor.withSymbolicTraits(.traitCondensed)!, size: 0))
 
     /// The insets of the ruler view.
     @Invalidating(.display)
@@ -95,7 +95,7 @@ public final class STGutterView: UIView {
     }
 }
 
-func adjustGutterFont(_ font: UIFont) -> UIFont {
+private func adjustGutterFont(_ font: UIFont) -> UIFont {
     // https://useyourloaf.com/blog/ios-9-proportional-numbers/
     // https://developer.apple.com/fonts/TrueType-Reference-Manual/RM09/AppendixF.html
     let features: [[UIFontDescriptor.FeatureKey: Int]] = [
@@ -125,6 +125,5 @@ func adjustGutterFont(_ font: UIFont) -> UIFont {
         ]
     ]
 
-    let adjustedFont = UIFont(descriptor: font.fontDescriptor.addingAttributes([.featureSettings: features]), size: max(font.pointSize * 0.9, UIFont.smallSystemFontSize))
-    return adjustedFont
+    return UIFont(descriptor: font.fontDescriptor.addingAttributes([.featureSettings: features]), size: 0)
 }
diff --git a/Sources/STTextViewUIKit/STTextView+Gutter.swift b/Sources/STTextViewUIKit/STTextView+Gutter.swift
index 322a5fe..149be7f 100644
--- a/Sources/STTextViewUIKit/STTextView+Gutter.swift
+++ b/Sources/STTextViewUIKit/STTextView+Gutter.swift
@@ -12,7 +12,6 @@ extension STTextView {
         set {
             if gutterView == nil, newValue == true {
                 let gutterView = STGutterView()
-                gutterView.font = adjustGutterFont(font)
                 gutterView.frame.size.width = gutterView.minimumThickness
                 gutterView.selectedLineTextColor = textColor
                 gutterView.highlightSelectedLine = highlightSelectedLine
diff --git a/TextEdit/Mac/ViewController.swift b/TextEdit/Mac/ViewController.swift
index 322ff9f..597d3c6 100644
--- a/TextEdit/Mac/ViewController.swift
+++ b/TextEdit/Mac/ViewController.swift
@@ -25,7 +25,8 @@ final class ViewController: NSViewController {
         paragraph.lineHeightMultiple = 1.2
         textView.defaultParagraphStyle = paragraph
 
-        textView.font = NSFont.monospacedSystemFont(ofSize: 14, weight: .regular)
+
+        textView.font = NSFont.monospacedSystemFont(ofSize: 0, weight: .regular)
         textView.text = try! String(contentsOf: Bundle.main.url(forResource: "content", withExtension: "txt")!)
         textView.isHorizontallyResizable = false // wrap
         textView.highlightSelectedLine = true
diff --git a/TextEdit/iOS/ViewController.swift b/TextEdit/iOS/ViewController.swift
index d3c847b..939b3ca 100644
--- a/TextEdit/iOS/ViewController.swift
+++ b/TextEdit/iOS/ViewController.swift
@@ -21,7 +21,7 @@ class ViewController: UIViewController {
         paragraph.lineHeightMultiple = 1.2
         textView.defaultParagraphStyle = paragraph
 
-        textView.font = UIFont.monospacedSystemFont(ofSize: 14, weight: .regular)
+        textView.font = UIFont.monospacedSystemFont(ofSize: 0, weight: .regular)
         textView.text = try! String(contentsOf: Bundle.main.url(forResource: "content", withExtension: "txt")!)
         textView.showsLineNumbers = true
         textView.showsInvisibleCharacters = false