1 files changed, 1 insertions, 1 deletions
diff --git a/lexer.l b/lexer.l
index 008f813bf5..220b07ccf8 100644
--- a/lexer.l
+++ b/lexer.l
@@ -36,7 +36,7 @@ PITCH		['`]*{OPTSIGN}{NOTENAME}
 DURNAME		1|2|4|8|16|32
 DURATION	{DURNAME}\.*
 FULLNOTE	{PITCH}{DURATION}?
-WORD		[a-zA-Z]+
+WORD		[a-zA-Z][a-zA-Z0-9_]+
 REAL		[0-9]+(\.[0-9]*)?
 
 %%