Index: tools/autogen.py
===================================================================
--- tools/autogen.py	(revision dd8b6a87925c4db039bcd5d96da488ee67d92e29)
+++ tools/autogen.py	(revision 95fe55cac78ac183464a76737f6fde227e0734ca)
@@ -128,5 +128,5 @@
 
 def filter_pairs(lines):
-	pattern = re.compile("^\tEMITTED_CONSTANT ([A-Z_]*) = \$([0-9]*)$");
+	pattern = re.compile("^\tEMITTED_CONSTANT ([A-Z_][A-Z0-9_]*) = \$([0-9]+)$");
 	pairs = []
 	for line in lines: