diff --git a/models/workflow/workflow_mongo_accessor.go b/models/workflow/workflow_mongo_accessor.go
index 4ab4314..c30906e 100644
--- a/models/workflow/workflow_mongo_accessor.go
+++ b/models/workflow/workflow_mongo_accessor.go
@@ -164,7 +164,7 @@ func (wfa *workflowMongoAccessor) book(id string, realData *Workflow, execs []*w
 * share is a function that shares a workflow to the peers if the workflow is shared
  */
 func (wfa *workflowMongoAccessor) share(realData *Workflow, delete bool, caller *tools.HTTPCaller) {
-	if realData == nil || realData.Shared == nil || len(realData.Shared) == 0 || caller.Disabled { // no shared no sharing
+	if realData == nil || realData.Shared == nil || len(realData.Shared) == 0 || caller == nil || caller.Disabled { // no shared no sharing
 		return
 	}
 	for _, sharedID := range realData.Shared { // loop through the shared ids