diff --git a/netwerk/streamconv/converters/mozTXTToHTMLConv.cpp b/netwerk/streamconv/converters/mozTXTToHTMLConv.cpp
index 80b3bc929e6..bfa855e70ac 100644
--- a/netwerk/streamconv/converters/mozTXTToHTMLConv.cpp
+++ b/netwerk/streamconv/converters/mozTXTToHTMLConv.cpp
@@ -542,8 +542,7 @@ mozTXTToHTMLConv::ItMatchesDelimited(const PRUnichar * aInString,
           nsCRT::IsAsciiDigit(textAfterPos) ||
           textAfterPos == *rep
         ) ||
-        !(before == LT_IGNORE ? !Compare(nsDependentString(aInString), nsDependentString(rep, aRepLen), nsCaseInsensitiveStringComparator()) :
-          !Compare(nsDependentString(aInString+1), nsDependentString(rep, aRepLen), nsCaseInsensitiveStringComparator()))
+        !(before == !Compare(nsDependentString(aInString + (LT_IGNORE ? 0 : 1) ), nsDependentString(rep, aRepLen), nsCaseInsensitiveStringComparator()))
     )
     return PR_FALSE;