diff --git a/Tests/SaplingEditorTests/MarkdownTextStylerRenderingTests.swift b/Tests/SaplingEditorTests/MarkdownTextStylerRenderingTests.swift
index 21f6e36..80acbca 100644
--- a/Tests/SaplingEditorTests/MarkdownTextStylerRenderingTests.swift
+++ b/Tests/SaplingEditorTests/MarkdownTextStylerRenderingTests.swift
@@ -40,6 +40,7 @@ final class MarkdownTextStylerRenderingTests: XCTestCase {
 
         XCTAssertTrue(isHidden(storage, at: checkedMarker.location))
         XCTAssertFalse(isHidden(storage, at: checkedMarker.location + 2))
+        XCTAssertNotNil(storage.attribute(.backgroundColor, at: checkedMarker.location + 2, effectiveRange: nil))
         XCTAssertTrue(isHidden(storage, at: uncheckedMarker.location))
         XCTAssertFalse(isHidden(storage, at: uncheckedMarker.location + 2))
         XCTAssertNotNil(storage.attribute(.strikethroughStyle, at: doneRange.location, effectiveRange: nil))