diff --git a/Tusker/Views/ContentTextView.swift b/Tusker/Views/ContentTextView.swift
index c485ed1b..e3c47c40 100644
--- a/Tusker/Views/ContentTextView.swift
+++ b/Tusker/Views/ContentTextView.swift
@@ -221,7 +221,9 @@ class ContentTextView: LinkTextView, BaseEmojiLabel {
             let charIndex = lineFragment.characterIndex(for: pointInLineFragment)
             
             var range = NSRange()
-            guard let link = lineFragment.attributedString.attribute(.link, at: charIndex, longestEffectiveRange: &range, in: lineFragment.attributedString.fullRange) as? URL else {
+            // sometimes characterIndex(for:) returns NSNotFound even for points that are in the line fragment's typographic bounds (see #183), so we check just in case
+            guard charIndex != NSNotFound,
+                let link = lineFragment.attributedString.attribute(.link, at: charIndex, longestEffectiveRange: &range, in: lineFragment.attributedString.fullRange) as? URL else {
                 return nil
             }
             // lineFragment.attributedString is the NSTextLayoutFragment's string, and so range is in its index space