diff --git a/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionEffectType.java b/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionEffectType.java
index 09f44ed625..035e4fe829 100644
--- a/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionEffectType.java
+++ b/src/main/java/org/bukkit/craftbukkit/potion/CraftPotionEffectType.java
@@ -83,6 +83,8 @@ public class CraftPotionEffectType extends PotionEffectType {
             return "SLOW_FALLING";
         case 29:
             return "CONDUIT_POWER";
+        case 30:
+            return "DOLPHINS_GRACE";
         default:
             return "UNKNOWN_EFFECT_TYPE_" + getId();
         }