diff --git a/indra/llui/lltexteditor.cpp b/indra/llui/lltexteditor.cpp
index 5f1302df88..6588c481ff 100644
--- a/indra/llui/lltexteditor.cpp
+++ b/indra/llui/lltexteditor.cpp
@@ -1693,28 +1693,25 @@ void LLTextEditor::pasteTextWithLinebreaks(LLWString & clean_string)
     std::basic_string<llwchar>::size_type start = 0;
     std::basic_string<llwchar>::size_type pos = clean_string.find('\n',start);
 
-    while((pos != -1) && (pos != clean_string.length() -1))
+    while (pos != std::basic_string<llwchar>::npos)
     {
-        if(pos!=start)
+        if (pos != start)
         {
             std::basic_string<llwchar> str = std::basic_string<llwchar>(clean_string,start,pos-start);
             setCursorPos(mCursorPos + insert(mCursorPos, str, true, LLTextSegmentPtr()));
         }
-        addLineBreakChar(true);         // Add a line break and group with the next addition.
+        const bool trailing_linebreak = (pos == clean_string.length() - 1);
+        addLineBreakChar(!trailing_linebreak);
 
         start = pos+1;
         pos = clean_string.find('\n',start);
     }
 
-    if (pos != start)
+    if (start < clean_string.length())
     {
         std::basic_string<llwchar> str = std::basic_string<llwchar>(clean_string,start,clean_string.length()-start);
         setCursorPos(mCursorPos + insert(mCursorPos, str, false, LLTextSegmentPtr()));
     }
-    else
-    {
-        addLineBreakChar(false);        // Add a line break and end the grouping.
-    }
 }
 
 // copy selection to primary