diff --git a/pyfpdb/FulltiltToFpdb.py b/pyfpdb/FulltiltToFpdb.py
index 104d7e87..a13cca50 100755
--- a/pyfpdb/FulltiltToFpdb.py
+++ b/pyfpdb/FulltiltToFpdb.py
@@ -37,7 +37,7 @@ class Fulltilt(HandHistoryConverter):
     substitutions = {
                      'LEGAL_ISO' : "USD|EUR|GBP|CAD|FPP",       # legal ISO currency codes
                             'LS' : u"\$|\u20AC|\xe2\x82\xac|",  # legal currency symbols - Euro(cp1252, utf-8)
-                           'TAB' : u"-\u2013'\s\da-zA-Z#",       # legal characters for tablename
+                           'TAB' : u"-\u2013'\s\da-zA-Z#_",       # legal characters for tablename
                            'NUM' : u".,\d",                     # legal characters in number format
                     }