diff --git a/README.md b/README.md
index 71b8c2517..29a4a82cb 100644
--- a/README.md
+++ b/README.md
@@ -18,5 +18,5 @@ PDF, Epub, Manpage http://readthedocs.org/projects/cgrates/downloads/
 
 API reference http://gopkgdoc.appspot.com/pkg/github.com/cgrates/cgrates
 
-Continous integration: [![build](http://goci.me/project/image/github.com/cgrates/cgrates "Continous integration")](http://goci.me/project/github.com/cgrates/cgrates) (http://goci.me rocks!)
+Continous integration: [![build](http://goci.me/project/image/github.com/cgrates/cgrates "Continous integration")](http://goci.me/project/github.com/cgrates/cgrates)
 
diff --git a/sessionmanager/session.go b/sessionmanager/session.go
index ad53f6703..1e6e8ca4d 100644
--- a/sessionmanager/session.go
+++ b/sessionmanager/session.go
@@ -111,6 +111,9 @@ func (s *Session) String() string {
 // 
 func (s *Session) SaveOperations() {
 	go func() {
+		if len(s.CallCosts) == 0 {
+			return
+		}
 		firstCC := s.CallCosts[0]
 		for _, cc := range s.CallCosts[1:] {
 			firstCC.Merge(cc)