diff --git a/src/DataInterfaces.cs b/src/DataInterfaces.cs
index fabac1f..945e072 100644
--- a/src/DataInterfaces.cs
+++ b/src/DataInterfaces.cs
@@ -11,7 +11,7 @@ namespace DCFApixels.DragonECS.Core
         void Init(ref T component, EcsWorld world);
         void OnDestroy(ref T component, EcsWorld world);
     }
-    public static class EcsWorldComponent<T> where T : struct
+    public static class EcsWorldComponent<T>
     {
         public static readonly IEcsWorldComponent<T> CustomHandler;
         public static readonly bool IsCustom;
diff --git a/src/EcsRunner.cs b/src/EcsRunner.cs
index 32a015e..c86b992 100644
--- a/src/EcsRunner.cs
+++ b/src/EcsRunner.cs
@@ -148,7 +148,7 @@ namespace DCFApixels.DragonECS
                 #region Constructors
                 public RunHelper(EcsRunner<TProcess> runner) : this(runner,
 #if DEBUG
-                    typeof(TProcess).ToMeta().Name)
+                    typeof(TProcess).GetMeta().Name)
 #else
                     string.Empty)
 #endif
@@ -298,7 +298,7 @@ namespace DCFApixels.DragonECS
                 #region Constructors
                 public RunHelperWithFinally(EcsRunner<TProcess> runner) : this(runner,
 #if DEBUG
-                    typeof(TProcess).ToMeta().Name)
+                    typeof(TProcess).GetMeta().Name)
 #else
                     string.Empty)
 #endif
diff --git a/src/Utils/AllowedInWorldsAttribute.cs b/src/Utils/AllowedInWorldsAttribute.cs
index 19457ed..58ed487 100644
--- a/src/Utils/AllowedInWorldsAttribute.cs
+++ b/src/Utils/AllowedInWorldsAttribute.cs
@@ -37,7 +37,7 @@ namespace DCFApixels.DragonECS
                         return;
                     }
                 }
-                throw new InvalidOperationException($"Using component {componentType.ToMeta().TypeName} is not allowed in the {worldType.ToMeta().TypeName} world.");
+                throw new InvalidOperationException($"Using component {componentType.GetMeta().TypeName} is not allowed in the {worldType.GetMeta().TypeName} world.");
             }
         }
     }