diff --git a/OpenRa.FileFormats/MiniYaml.cs b/OpenRa.FileFormats/MiniYaml.cs
index 6da0eec414..5f079901dd 100755
--- a/OpenRa.FileFormats/MiniYaml.cs
+++ b/OpenRa.FileFormats/MiniYaml.cs
@@ -6,6 +6,8 @@ using System.IO;
 
 namespace OpenRa.FileFormats
 {
+	using MiniYamlNodes = Dictionary<string, MiniYaml>;
+
 	public class MiniYaml
 	{
 		public string Value;
@@ -97,5 +99,32 @@ namespace OpenRa.FileFormats
 
 			return new MiniYaml( a.Value ?? b.Value, Merge( a.Nodes, b.Nodes ) );
 		}
+
+		public IEnumerable<string> ToLines(string name)
+		{
+			yield return name + ": " + Value;
+			if (Nodes != null)
+				foreach (var line in Nodes.ToLines(false))
+					yield return "\t" + line;
+		}
+	}
+
+	public static class MiniYamlExts
+	{
+		public static void WriteToFile(this MiniYamlNodes y, string filename)
+		{
+			File.WriteAllLines(filename, y.ToLines(true).Select(x => x.TrimEnd()).ToArray());
+		}
+
+		public static IEnumerable<string> ToLines(this MiniYamlNodes y, bool lowest)
+		{
+			foreach (var kv in y)
+			{
+				foreach (var line in kv.Value.ToLines(kv.Key))
+					yield return line;
+				if (lowest)
+					yield return "";
+			}
+		}
 	}
 }
diff --git a/RulesConverter/MiniYamlExts.cs b/RulesConverter/MiniYamlExts.cs
index 6b388fc99e..17a1047e71 100755
--- a/RulesConverter/MiniYamlExts.cs
+++ b/RulesConverter/MiniYamlExts.cs
@@ -1,40 +1,14 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Text;
 using OpenRa.FileFormats;
 
 namespace RulesConverter
 {
 	using MiniYamlNodes = Dictionary<string, MiniYaml>;
-	using System.IO;
 
 	static class MiniYamlExts
 	{
-		public static void WriteToFile( this MiniYamlNodes y, string filename )
-		{
-			File.WriteAllLines( filename, y.ToLines( true ).Select( x => x.TrimEnd() ).ToArray() );
-		}
-
-		public static IEnumerable<string> ToLines( this MiniYamlNodes y, bool lowest )
-		{
-			foreach( var kv in y )
-			{
-				foreach( var line in kv.Value.ToLines( kv.Key ) )
-					yield return line;
-				if( lowest )
-					yield return "";
-			}
-		}
-
-		public static IEnumerable<string> ToLines( this MiniYaml y, string name )
-		{
-			yield return name + ": " + y.Value;
-			if( y.Nodes != null )
-				foreach( var line in y.Nodes.ToLines( false ) )
-					yield return "\t" + line;
-		}
-
 		public static void OptimizeInherits( this MiniYamlNodes y, MiniYamlNodes baseYaml )
 		{
 			foreach( var key in y.Keys.ToList() )
@@ -66,7 +40,7 @@ namespace RulesConverter
 			}
 		}
 
-		public static MiniYamlNodes Diff( MiniYamlNodes a, MiniYamlNodes b )
+		static MiniYamlNodes Diff( MiniYamlNodes a, MiniYamlNodes b )
 		{
 			if( a.Count == 0 && b.Count == 0 )
 				return null;
@@ -97,7 +71,7 @@ namespace RulesConverter
 			return ret;
 		}
 
-		public static MiniYaml Diff( MiniYaml a, MiniYaml b, out bool remove )
+		static MiniYaml Diff( MiniYaml a, MiniYaml b, out bool remove )
 		{
 			remove = false;
 			if( a == null && b == null )