diff --git a/OpenRA.Game/Traits/Mobile.cs b/OpenRA.Game/Traits/Mobile.cs
index 0f2d576e36..6e1202128a 100644
--- a/OpenRA.Game/Traits/Mobile.cs
+++ b/OpenRA.Game/Traits/Mobile.cs
@@ -81,7 +81,7 @@ namespace OpenRA.Traits
 			TerrainSpeed = new Dictionary<string, float>();
 			
 			if (info.TerrainTypes.Count() != info.TerrainSpeeds.Count())
-				throw new InvalidOperationException("Mobile TerrainType/TerrainSpeed length missmatch");
+				throw new InvalidOperationException("Mobile TerrainType/TerrainSpeed length mismatch");
 			
 			for (int i = 0; i < info.TerrainTypes.Count(); i++)
 			{
diff --git a/mods/ra/system.yaml b/mods/ra/system.yaml
index a52e112ca6..ff4f2d084b 100644
--- a/mods/ra/system.yaml
+++ b/mods/ra/system.yaml
@@ -255,6 +255,7 @@ CAMERA:
 		Range: 10
 
 FLARE:
+	Aircraft:
 	Unit:
 	Health:
 		HP:1000