diff --git a/Utilities/BibTex/Parsing/BibTexLexer.cs b/Utilities/BibTex/Parsing/BibTexLexer.cs
index e13cdb570..a94cc91fe 100644
--- a/Utilities/BibTex/Parsing/BibTexLexer.cs
+++ b/Utilities/BibTex/Parsing/BibTexLexer.cs
@@ -97,10 +97,12 @@ private void ParseEntry(BibTexLexerCallback callback)
                 switch (bibtex[c])
                 {
                     case '(':
+                        ++c;
                         callback.RaiseComment(ParseUntilDelim(callback, ')'));
                         return;
 
                     case '{':
+                        ++c;
                         callback.RaiseComment(ParseUntilDelim(callback, '}'));
                         return;