diff --git a/src/python/bcc/__init__.py b/src/python/bcc/__init__.py
index cc59b2296a75..228eb504e19c 100644
--- a/src/python/bcc/__init__.py
+++ b/src/python/bcc/__init__.py
@@ -726,7 +726,7 @@ def get_kprobe_functions(event_re):
                 raise e
             blacklist = set([])
 
-        avail_filter_file = "%s/tracing/available_filter_functions" % DEBUGFS
+        avail_filter_file = "%s/available_filter_functions" % TRACEFS
         try:
             with open(avail_filter_file, "rb") as avail_filter_f:
                 avail_filter = set([line.rstrip().split()[0] for line in avail_filter_f])