Index: source/network/NetMessage.cpp
===================================================================
--- source/network/NetMessage.cpp
+++ source/network/NetMessage.cpp
@@ -21,6 +21,7 @@
 #include "ps/CLogger.h"
 
 #include "ps/Game.h"
+#include "ps/Util.h"
 #include "simulation2/Simulation2.h"
 
 #undef ALLNETMSGS_DONT_CREATE_NMTS
@@ -216,7 +217,8 @@
 		break;
 
 	default:
-		LOGERROR("CNetMessageFactory::CreateMessage(): Unknown message type '%d' received", header.GetType());
+		LOGERROR("CNetMessageFactory::CreateMessage(): Unknown message type '%d' received",
+			ToUnderlying(header.GetType()));
 		break;
 	}
 
Index: source/ps/Util.h
===================================================================
--- source/ps/Util.h
+++ source/ps/Util.h
@@ -23,6 +23,8 @@
 #include "lib/status.h"
 #include "ps/CStr.h"
 
+#include <type_traits>
+
 class Tex;
 
 void WriteSystemInfo();
@@ -38,4 +40,10 @@
 std::string Hexify(const std::string& s);
 std::string Hexify(const u8* s, size_t length);
 
+template<typename Enum>
+std::underlying_type_t<Enum> ToUnderlying(Enum e)
+{
+	return static_cast<std::underlying_type_t<Enum>>(e);
+}
+
 #endif // PS_UTIL_H
Index: source/simulation2/serialization/BinarySerializer.cpp
===================================================================
--- source/simulation2/serialization/BinarySerializer.cpp
+++ source/simulation2/serialization/BinarySerializer.cpp
@@ -22,6 +22,7 @@
 #include "lib/alignment.h"
 #include "lib/utf8.h"
 #include "ps/CLogger.h"
+#include "ps/Util.h"
 #include "scriptinterface/FunctionWrapper.h"
 #include "scriptinterface/ScriptExtraHeaders.h"
 #include "scriptinterface/ScriptRequest.h"
@@ -52,7 +53,7 @@
 	case js::Scalar::Uint8Clamped:
 		return SCRIPT_TYPED_ARRAY_UINT8_CLAMPED;
 	default:
-		LOGERROR("Cannot serialize unrecognized typed array view: %d", arrayType);
+		LOGERROR("Cannot serialize unrecognized typed array view: %d", ToUnderlying(arrayType));
 		throw PSERROR_Serialize_InvalidScriptValue();
 	}
 }