diff --git a/python/ajax/spotcgi.in b/python/ajax/spotcgi.in
index e88321816..0922b0ac2 100755
--- a/python/ajax/spotcgi.in
+++ b/python/ajax/spotcgi.in
@@ -364,7 +364,7 @@ def print_stats(automaton, detinfo = False, ta = False):
             unbufprint(", acceptance condition: Büchi")
         else:
             unbufprint(", acceptance condition: " + str(acc))
-            if acc.is_tt():
+            if acc.is_t():
                 unbufprint(" (all cycles are accepting)")
     unbufprint("</p>\n")
     # Decide whether we will render the automaton or not.