diff --git a/src/common/xmpp/tls_nb.py b/src/common/xmpp/tls_nb.py
index cebd7d47d..52a429cc4 100644
--- a/src/common/xmpp/tls_nb.py
+++ b/src/common/xmpp/tls_nb.py
@@ -307,6 +307,7 @@ class NonBlockingTLS(PlugIn):
 		except IOError, e:
 			log.warning('Unable to open certificate file %s: %s' % \
 				(cert_path, str(e)))
+			return
 		lines = f.readlines()
 		i = 0
 		begin = -1