diff --git a/mtp/mtp_MtpServer.cpp b/mtp/mtp_MtpServer.cpp
index f49270f..5f509eb 100755
--- a/mtp/mtp_MtpServer.cpp
+++ b/mtp/mtp_MtpServer.cpp
@@ -130,7 +130,7 @@
 				int storageID = stores->at(i)->mtpid;
 				long reserveSpace = 1;
 				bool removable = false;
-				long maxFileSize = stores->at(i)->maxFileSize;
+				uint64_t maxFileSize = stores->at(i)->maxFileSize;
 				if (descriptionStr != "") {
 					MtpStorage* storage = new MtpStorage(storageID, &pathStr[0], &descriptionStr[0], reserveSpace, removable, maxFileSize, refserver);
 					server->addStorage(storage);