diff --git a/src/Umbraco.Web/Actions/ActionCollection.cs b/src/Umbraco.Web/Actions/ActionCollection.cs
index 64cf950c60..89ac8a59f4 100644
--- a/src/Umbraco.Web/Actions/ActionCollection.cs
+++ b/src/Umbraco.Web/Actions/ActionCollection.cs
@@ -1,5 +1,4 @@
 using System.Collections.Generic;
-using System.Globalization;
 using System.Linq;
 using Umbraco.Core;
 using Umbraco.Core.Composing;
@@ -22,19 +21,21 @@ namespace Umbraco.Web.Actions
 
         internal IEnumerable<IAction> GetByLetters(IEnumerable<string> letters)
         {
-            var all = this.ToArray();
-            return letters.Select(x => all.FirstOrDefault(y => y.Letter.ToString(CultureInfo.InvariantCulture) == x))
+            var actions = this.ToArray(); // no worry: internally, it's already an array
+            return letters
+                .Where(x => x.Length == 1)
+                .Select(x => actions.FirstOrDefault(y => y.Letter == x[0]))
                 .WhereNotNull()
-                .ToArray();
+                .ToList();
         }
 
         internal IReadOnlyList<IAction> FromEntityPermission(EntityPermission entityPermission)
         {
+            var actions = this.ToArray(); // no worry: internally, it's already an array
             return entityPermission.AssignedPermissions
                 .Where(x => x.Length == 1)
-                .Select(x => x.ToCharArray()[0])
-                .SelectMany(c => this.Where(x => x.Letter == c))
-                .Where(action => action != null)
+                .SelectMany(x => actions.Where(y => y.Letter == x[0]))
+                .WhereNotNull()
                 .ToList();
         }
     }
diff --git a/src/Umbraco.Web/Actions/ActionCollectionBuilder.cs b/src/Umbraco.Web/Actions/ActionCollectionBuilder.cs
index 6002c8d2b0..079705645d 100644
--- a/src/Umbraco.Web/Actions/ActionCollectionBuilder.cs
+++ b/src/Umbraco.Web/Actions/ActionCollectionBuilder.cs
@@ -1,11 +1,9 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Reflection;
 using LightInject;
 using Umbraco.Core.Composing;
 
-
 namespace Umbraco.Web.Actions
 {
     internal class ActionCollectionBuilder : LazyCollectionBuilderBase<ActionCollectionBuilder, ActionCollection, IAction>
@@ -19,13 +17,13 @@ namespace Umbraco.Web.Actions
         protected override IEnumerable<IAction> CreateItems(params object[] args)
         {
             var items = base.CreateItems(args).ToList();
+
             //validate the items, no actions should exist that do not either expose notifications or permissions
-            var invalid = items.Where(x => !x.CanBePermissionAssigned && !x.ShowInNotifier).ToList();
-            if (invalid.Count > 0)
-            {
-                throw new InvalidOperationException($"Invalid actions '{string.Join(", ", invalid.Select(x => x.Alias))}'. All {typeof(IAction)} implementations must be true for either {nameof(IAction.CanBePermissionAssigned)} or {nameof(IAction.ShowInNotifier)}");
-            }
-            return items;
+            var invalidItems = items.Where(x => !x.CanBePermissionAssigned && !x.ShowInNotifier).ToList();
+            if (invalidItems.Count == 0) return items;
+
+            var invalidActions = string.Join(", ", invalidItems.Select(x => "'" + x.Alias + "'"));
+            throw new InvalidOperationException($"Invalid actions {invalidActions}'. All {typeof(IAction)} implementations must be true for either {nameof(IAction.CanBePermissionAssigned)} or {nameof(IAction.ShowInNotifier)}.");
         }
     }
 }
diff --git a/src/Umbraco.Web/Runtime/WebRuntimeComponent.cs b/src/Umbraco.Web/Runtime/WebRuntimeComponent.cs
index 1af24db636..2027cb857d 100644
--- a/src/Umbraco.Web/Runtime/WebRuntimeComponent.cs
+++ b/src/Umbraco.Web/Runtime/WebRuntimeComponent.cs
@@ -181,7 +181,7 @@ namespace Umbraco.Web.Runtime
                 .Append<ContentFinderByRedirectUrl>();
 
             composition.Container.RegisterSingleton<ISiteDomainHelper, SiteDomainHelper>();
-            
+
             composition.Container.RegisterSingleton<ICultureDictionaryFactory, DefaultCultureDictionaryFactory>();
 
             // register *all* checks, except those marked [HideFromTypeFinder] of course