diff --git a/Mac/MainWindow/Timeline/Cell/MultilineTextFieldSizer.swift b/Mac/MainWindow/Timeline/Cell/MultilineTextFieldSizer.swift
index de75fc46e..82f49370a 100644
--- a/Mac/MainWindow/Timeline/Cell/MultilineTextFieldSizer.swift
+++ b/Mac/MainWindow/Timeline/Cell/MultilineTextFieldSizer.swift
@@ -53,7 +53,10 @@ final class MultilineTextFieldSizer {
 	}
 
 	static func size(for attributedString: NSAttributedString, numberOfLines: Int, width: Int) -> TextFieldSizeInfo {
-
+		guard attributedString.length > 0 else {
+			return TextFieldSizeInfo(size: NSSize.zero, numberOfLinesUsed: 0)
+		}
+		
 		// Assumes the same font family/size for the whole string
 		let font = attributedString.attribute(.font, at: 0, effectiveRange: nil) as! NSFont