diff --git a/OpenRA.FileFormats/FieldLoader.cs b/OpenRA.FileFormats/FieldLoader.cs
index 824a70630b..d81a73fc60 100755
--- a/OpenRA.FileFormats/FieldLoader.cs
+++ b/OpenRA.FileFormats/FieldLoader.cs
@@ -282,6 +282,12 @@ namespace OpenRA.FileFormats
 				return ret;
 			}
 
+			else if (fieldType == typeof(Size))
+			{
+				var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+				return new Size(int.Parse(parts[0]), int.Parse(parts[1]));
+			}
+
 			else if (fieldType == typeof(int2))
 			{
 				var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);