diff --git a/src/FirebirdSql.Data.FirebirdClient/Services/FbTraceConfiguration.cs b/src/FirebirdSql.Data.FirebirdClient/Services/FbTraceConfiguration.cs
index fc8b4b5d..f805c13d 100644
--- a/src/FirebirdSql.Data.FirebirdClient/Services/FbTraceConfiguration.cs
+++ b/src/FirebirdSql.Data.FirebirdClient/Services/FbTraceConfiguration.cs
@@ -36,7 +36,7 @@ protected static string WriteString(string s)
 
 	protected static string WriteNumber(int i)
 	{
-		return i.ToString();
+		return i.ToString(CultureInfo.InvariantCulture);
 	}
 
 	protected static string WriteRegEx(string re)