diff --git a/core/logic/smn_players.cpp b/core/logic/smn_players.cpp
index 7a4bf35c..e4eb7eac 100644
--- a/core/logic/smn_players.cpp
+++ b/core/logic/smn_players.cpp
@@ -334,7 +334,7 @@ static cell_t sm_GetClientIP(IPluginContext *pCtx, const cell_t *params)
 // Must match clients.inc
 enum class AuthStringType
 {
-	Engine,
+	Engine = 0,
 	Steam2,
 	Steam3,
 	SteamID64,
@@ -405,7 +405,7 @@ static cell_t SteamIDToLocal(IPluginContext *pCtx, int index, AuthStringType aut
 					universe = 0;
 				}
 				
-				snprintf(szAuth, sizeof(szAuth), "STEAM_%u:%u:%u", universe, accountId % 2, accountId >> 1);
+				snprintf(szAuth, sizeof(szAuth), "STEAM_%u:%u:%u", universe, accountId & 1, accountId >> 1);
 			}
 			else if (instance != 1)
 			{
diff --git a/plugins/include/clients.inc b/plugins/include/clients.inc
index 600bf3fe..61045683 100644
--- a/plugins/include/clients.inc
+++ b/plugins/include/clients.inc
@@ -56,7 +56,7 @@ enum NetFlow
  */
 enum AuthStringType
 {
-	AuthString_Engine,     /**< The game-specific auth string as returned from the engine */
+	AuthString_Engine = 0, /**< The game-specific auth string as returned from the engine */
 	
 	// The following are only available on games that support Steam authentication.
 	AuthString_Steam2,     /**< Steam2 rendered format, ex "STEAM_1:1:4153990" */