diff --git a/src/EditorView.swift b/src/EditorView.swift
index eb0fa6f..56efa55 100644
--- a/src/EditorView.swift
+++ b/src/EditorView.swift
@@ -49,11 +49,18 @@ class MarkdownLayoutManager: NSLayoutManager {
 
         var skipRanges: [NSRange] = []
         for block in blockRanges {
-            guard case .checkbox(let checked) = block.kind else { continue }
             let glyphRange = self.glyphRange(forCharacterRange: block.range, actualCharacterRange: nil)
             guard NSIntersectionRange(glyphRange, glyphsToShow).length > 0 else { continue }
-            skipRanges.append(glyphRange)
-            drawCheckbox(checked: checked, glyphRange: glyphRange, origin: origin, container: textContainer)
+
+            switch block.kind {
+            case .checkbox(let checked):
+                skipRanges.append(glyphRange)
+                drawCheckbox(checked: checked, glyphRange: glyphRange, origin: origin, container: textContainer)
+            case .horizontalRule:
+                skipRanges.append(glyphRange)
+            default:
+                break
+            }
         }
 
         if skipRanges.isEmpty {