diff --git a/OpenRA.Mods.Common/Traits/World/WeatherOverlay.cs b/OpenRA.Mods.Common/Traits/World/WeatherOverlay.cs
index f141e4eac9..cdcfca9861 100644
--- a/OpenRA.Mods.Common/Traits/World/WeatherOverlay.cs
+++ b/OpenRA.Mods.Common/Traits/World/WeatherOverlay.cs
@@ -35,11 +35,11 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("Hard or soft fading between the WindLevels.")]
 		public readonly bool InstantWindChanges = false;
 
-		[Desc("Particles are drawn in squares when enabled, else with lines.")]
+		[Desc("Particles are drawn in squares when enabled, otherwise with lines.")]
 		public readonly bool UseSquares = true;
 
 		[Desc("Works only with squares enabled. Size min. and max. value in pixels.")]
-		public readonly int[] PaticleSize = { 1, 3 };
+		public readonly int[] ParticleSize = { 1, 3 };
 
 		[Desc("Scatters falling direction on the x-axis. Scatter min. and max. value in px/tick.")]
 		public readonly int[] ScatterDirection = { -1, 1 };
@@ -64,7 +64,7 @@ namespace OpenRA.Mods.Common.Traits
 			Color.FromArgb(188, 188, 188)
 		};
 
-		[Desc("Works only with line enabled and can get used to fade out the tail of the line like a contrail.")]
+		[Desc("Works only with line enabled and can be used to fade out the tail of the line like a contrail.")]
 		public readonly byte LineTailAlphaValue = 200;
 
 		public object Create(ActorInitializer init) { return new WeatherOverlay(init.World, this); }
@@ -130,7 +130,7 @@ namespace OpenRA.Mods.Common.Traits
 						{
 							PosX = Game.CosmeticRandom.Next(Game.Renderer.Resolution.Width),
 							PosY = Game.CosmeticRandom.Next(rangeY),
-							Size = Game.CosmeticRandom.Next(info.PaticleSize[0], info.PaticleSize[1] + 1),
+							Size = Game.CosmeticRandom.Next(info.ParticleSize[0], info.ParticleSize[1] + 1),
 							DirectionScatterX = info.ScatterDirection[0] + Game.CosmeticRandom.Next(info.ScatterDirection[1] - info.ScatterDirection[0]),
 							Gravity = float2.Lerp(info.Gravity[0], info.Gravity[1], Game.CosmeticRandom.NextFloat()),
 							SwingOffset = float2.Lerp(info.SwingOffset[0], info.SwingOffset[1], Game.CosmeticRandom.NextFloat()),
diff --git a/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs b/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
index e74f9d9631..ddb9f9cd0f 100644
--- a/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
+++ b/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
@@ -2371,6 +2371,12 @@ namespace OpenRA.Mods.Common.UtilityCommands
 						TryUpdateColors(ref node.Value.Value);
 				}
 
+				if (engineVersion < 20151107 && depth == 2)
+				{
+					if (node.Key == "PaticleSize")
+						node.Key = "ParticleSize";
+				}
+
 				UpgradeActorRules(engineVersion, ref node.Value.Nodes, node, depth + 1);
 			}
 		}
diff --git a/mods/cnc/maps/gdi06/map.yaml b/mods/cnc/maps/gdi06/map.yaml
index 95219dac54..90a4159897 100644
--- a/mods/cnc/maps/gdi06/map.yaml
+++ b/mods/cnc/maps/gdi06/map.yaml
@@ -1056,7 +1056,7 @@ Rules:
 			WindTick: 150, 550
 			InstantWindChanges: false
 			UseSquares: false
-			PaticleSize: 0, 0
+			ParticleSize: 0, 0
 			ScatterDirection: 0, 0
 			Gravity: 8.00, 12.00
 			SwingOffset: 0, 0
diff --git a/mods/ra/maps/fort-lonestar/map.yaml b/mods/ra/maps/fort-lonestar/map.yaml
index b277ad5562..2038646cd4 100644
--- a/mods/ra/maps/fort-lonestar/map.yaml
+++ b/mods/ra/maps/fort-lonestar/map.yaml
@@ -508,7 +508,7 @@ Rules:
 			WindTick: 150, 550
 			InstantWindChanges: false
 			UseSquares: false
-			PaticleSize: 0, 0
+			ParticleSize: 0, 0
 			ScatterDirection: 0, 0
 			Gravity: 8.00, 12.00
 			SwingOffset: 0, 0
diff --git a/mods/ra/maps/snow town/map.yaml b/mods/ra/maps/snow town/map.yaml
index aadefba7f7..b8c71724c5 100644
--- a/mods/ra/maps/snow town/map.yaml	
+++ b/mods/ra/maps/snow town/map.yaml	
@@ -668,7 +668,7 @@ Rules:
 			WindTick: 150, 550
 			InstantWindChanges: false
 			UseSquares: true
-			PaticleSize: 1, 3
+			ParticleSize: 1, 3
 			ScatterDirection: -1, 1
 			Gravity: 1.00, 2.00
 			SwingOffset: 1.0, 1.5