diff --git a/src/openrct2/network/Network.cpp b/src/openrct2/network/Network.cpp
index e1fe11d17f..b8648c3f57 100644
--- a/src/openrct2/network/Network.cpp
+++ b/src/openrct2/network/Network.cpp
@@ -2061,7 +2061,7 @@ void Network::Client_Handle_GAME_ACTION(NetworkConnection& connection, NetworkPa
     uint8 playerid;
     packet >> tick >> type >> playerid;
     MemoryStream stream;
-    for (int i = packet.BytesRead; i < packet.Size; ++i) {
+    for (size_t i = packet.BytesRead; i < packet.Size; ++i) {
         stream.WriteValue(((uint8*)packet.GetData())[i]);
     }
     stream.SetPosition(0);
@@ -2080,7 +2080,7 @@ void Network::Server_Handle_GAME_ACTION(NetworkConnection& connection, NetworkPa
 
     packet >> tick >> commandType;
     MemoryStream stream;
-    for (int i = packet.BytesRead; i < packet.Size; ++i) {
+    for (size_t i = packet.BytesRead; i < packet.Size; ++i) {
         stream.WriteValue(((uint8*)packet.GetData())[i]);
     }
     stream.SetPosition(0);