diff --git a/apps/openmw/mwmp/GUI/GUIChat.cpp b/apps/openmw/mwmp/GUI/GUIChat.cpp
index 8ded6456a..7e464ce47 100644
--- a/apps/openmw/mwmp/GUI/GUIChat.cpp
+++ b/apps/openmw/mwmp/GUI/GUIChat.cpp
@@ -123,7 +123,7 @@ namespace mwmp
         else
         {
             mHistory->addText(color + msg);
-            LOG_MESSAGE_SIMPLE(Log::LOG_INFO, msg.c_str());
+            LOG_MESSAGE_SIMPLE(Log::LOG_INFO, "%s", msg.c_str());
         }
     }
 
diff --git a/components/openmw-mp/Packets/BasePacket.hpp b/components/openmw-mp/Packets/BasePacket.hpp
index e298d27b7..e6bd68fea 100644
--- a/components/openmw-mp/Packets/BasePacket.hpp
+++ b/components/openmw-mp/Packets/BasePacket.hpp
@@ -80,7 +80,7 @@ namespace mwmp
         {
             if (write)
             {
-                RakNet::RakString rstr(str.c_str());
+                RakNet::RakString rstr("%s", str.c_str());
                 if (compress)
                     rstr.SerializeCompressed(bs);
                 else