diff --git a/modules/dnn/src/caffe/caffe_importer.cpp b/modules/dnn/src/caffe/caffe_importer.cpp
index fc6cbcdd28..a4afec136a 100644
--- a/modules/dnn/src/caffe/caffe_importer.cpp
+++ b/modules/dnn/src/caffe/caffe_importer.cpp
@@ -217,7 +217,7 @@ public:
 
             const google::protobuf::UnknownFieldSet& unknownFields = msgRefl->GetUnknownFields(msg);
             bool hasData =  fd->is_required() ||
-                            (fd->is_optional() && msgRefl->HasField(msg, fd)) ||
+                            (!fd->is_repeated() && !fd->is_required() && msgRefl->HasField(msg, fd)) ||
                             (fd->is_repeated() && msgRefl->FieldSize(msg, fd) > 0) ||
                             !unknownFields.empty();
             if (!hasData)