diff --git a/pkg/common/imapi/caller.go b/pkg/common/imapi/caller.go
index 894c777f..3ebee921 100644
--- a/pkg/common/imapi/caller.go
+++ b/pkg/common/imapi/caller.go
@@ -49,6 +49,8 @@ func New(imApi string, imSecret string, defaultIMUserID string) CallerInterface
 		imApi:           imApi,
 		imSecret:        imSecret,
 		defaultIMUserID: defaultIMUserID,
+		tokenCache:      make(map[string]*authToken),
+		lock:            sync.RWMutex{},
 	}
 }