diff --git a/openlp/core/display/render.py b/openlp/core/display/render.py
index a15edc153..6a063993a 100644
--- a/openlp/core/display/render.py
+++ b/openlp/core/display/render.py
@@ -48,7 +48,7 @@ ENGLISH_NOTES = '(C|D|E|F|G|A|B|N.C.)?'
 GERMAN_NOTES = '(C|D|E|F|G|A|B|H|N.C.)?'
 NEOLATIN_NOTES = '(Do|Re|Mi|Fa|Sol|La|Si|N.C.)?'
 CHORD_PREFIXES = '(=|\\(|\\|)*?'
-CHORD_SUFFIXES = '(b|#|x|+|-|M|m|Maj|maj|min|sus|dim|add|aug|dom|0|1|2|3|4|5|6|7|8|9|\\(|\\)|no|omit)*?'
+CHORD_SUFFIXES = '(b|bb|#|##|x|+|-|M|m|Maj|maj|min|sus|dim|add|aug|dom|0|1|2|3|4|5|6|7|8|9|\\(|\\)|no|omit)*?'
 SLIM_CHARS = 'fiíIÍjlĺľrtť.,;/ ()|"\'!:\\'
 CHORD_TEMPLATE = '<span class="chordline">{chord}</span>'
 FIRST_CHORD_TEMPLATE = '<span class="chordline">{chord}</span>'