--- a/modules/dnn/src/caffe/caffe_io.cpp
+++ b/modules/dnn/src/caffe/caffe_io.cpp
@@ -1111,7 +1111,7 @@ static const int kProtoReadBytesLimit = INT_MAX;  // Max size of 2 GB minus 1 by
 
 bool ReadProtoFromBinary(ZeroCopyInputStream* input, Message *proto) {
     CodedInputStream coded_input(input);
-    coded_input.SetTotalBytesLimit(kProtoReadBytesLimit, 536870912);
+    coded_input.SetTotalBytesLimit(kProtoReadBytesLimit);
 
     return proto->ParseFromCodedStream(&coded_input);
 }