diff --git a/src/engine/server/server.cpp b/src/engine/server/server.cpp
index 581c7e6736..ab0f312250 100644
--- a/src/engine/server/server.cpp
+++ b/src/engine/server/server.cpp
@@ -845,8 +845,8 @@ void CServer::ProcessClientPacket(CNetChunk *pPacket)
 				return;
 
 			int Chunk = Unpacker.GetInt();
-			int ChunkSize = 1024-128;
-			int Offset = Chunk * ChunkSize;
+			unsigned int ChunkSize = 1024-128;
+			unsigned int Offset = Chunk * ChunkSize;
 			int Last = 0;
 
 			// drop faulty map data requests