diff --git a/core/api.go b/core/api.go
index 93f8538..71b7d45 100644
--- a/core/api.go
+++ b/core/api.go
@@ -201,7 +201,7 @@ func (caller apiCaller) blockAPI(w http.ResponseWriter, r *http.Request) error {
 
 				bi.Accid = accid
 				caller.mg.bl.add(&bi)
-				mg.sessionProvider.Delete(accid)
+				mg.sessionProvider.Invalidate(accid)
 			}
 		}
 	} else if r.Method == "DELETE" {
diff --git a/core/service.go b/core/service.go
index 6314cd0..e7a5ae3 100644
--- a/core/service.go
+++ b/core/service.go
@@ -605,7 +605,7 @@ func (sh *serviceDescription) authorize_dev(w http.ResponseWriter, r *http.Reque
 					Accid: authinfo.Account,
 				})
 			}
-			sh.sessionProvider.Delete(authinfo.Account)
+			sh.sessionProvider.Invalidate(authinfo.Account)
 		}
 
 		return