diff --git a/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs b/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
index 00b5a112f4..48570cf6ed 100644
--- a/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
+++ b/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
@@ -2168,6 +2168,10 @@ namespace OpenRA.Mods.Common.UtilityCommands
 							var value = Exts.ParseIntegerInvariant(interval.Value.Value);
 							interval.Value.Value = (value * 25).ToString();
 						}
+
+						var chance = node.Value.Nodes.FirstOrDefault(n => n.Key == "WaterChance");
+						if (chance != null)
+							ConvertFloatToIntPercentage(ref chance.Value.Value);
 					}
 				}
 
diff --git a/mods/ra/maps/drop-zone-w/map.yaml b/mods/ra/maps/drop-zone-w/map.yaml
index 2f0de1c019..13fc0a9e79 100644
--- a/mods/ra/maps/drop-zone-w/map.yaml
+++ b/mods/ra/maps/drop-zone-w/map.yaml
@@ -200,7 +200,7 @@ Rules:
 		CrateSpawner:
 			Maximum: 3
 			SpawnInterval: 125
-			WaterChance: 1
+			WaterChance: 100
 			CrateActors: unitcrate
 			InitialSpawnDelay: 0
 		-SpawnMPUnits:
diff --git a/mods/ra/rules/world.yaml b/mods/ra/rules/world.yaml
index 49e8a63df1..ae2d4193fc 100644
--- a/mods/ra/rules/world.yaml
+++ b/mods/ra/rules/world.yaml
@@ -106,7 +106,7 @@ World:
 		Minimum: 1
 		Maximum: 3
 		SpawnInterval: 3000
-		WaterChance: .2
+		WaterChance: 20
 	DomainIndex:
 	SmudgeLayer@SCORCH:
 		Type: Scorch