diff --git a/src/apps/haiku-depot/textview/ParagraphLayout.cpp b/src/apps/haiku-depot/textview/ParagraphLayout.cpp
index 4d49ba6432..107a606b3e 100644
--- a/src/apps/haiku-depot/textview/ParagraphLayout.cpp
+++ b/src/apps/haiku-depot/textview/ParagraphLayout.cpp
@@ -328,8 +328,9 @@ ParagraphLayout::LastOffsetOnLine(int32 lineIndex)
 
 	if (lineIndex < 0)
 		lineIndex = 0;
+
 	if (lineIndex >= fLineInfos.CountItems() - 1)
-		return CountGlyphs();
+		return CountGlyphs() - 1;
 
 	return fLineInfos.ItemAt(lineIndex + 1).textOffset - 1;
 }