diff --git a/NzbDrone.Core.Test/Messaging/Commands/CommandEqualityComparerFixture.cs b/NzbDrone.Core.Test/Messaging/Commands/CommandEqualityComparerFixture.cs
index f4ffc3614..34d4b1d30 100644
--- a/NzbDrone.Core.Test/Messaging/Commands/CommandEqualityComparerFixture.cs
+++ b/NzbDrone.Core.Test/Messaging/Commands/CommandEqualityComparerFixture.cs
@@ -1,8 +1,11 @@
 using FluentAssertions;
 using NUnit.Framework;
+using NzbDrone.Core.Indexers;
 using NzbDrone.Core.IndexerSearch;
 using NzbDrone.Core.MediaFiles.Commands;
 using NzbDrone.Core.Messaging.Commands;
+using NzbDrone.Core.Update.Commands;
+using NzbDrone.SignalR;
 
 namespace NzbDrone.Core.Test.Messaging.Commands
 {
@@ -71,5 +74,24 @@ namespace NzbDrone.Core.Test.Messaging.Commands
 
             CommandEqualityComparer.Instance.Equals(command1, command2).Should().BeFalse();
         }
+
+
+        [Test]
+        public void should_return_false_when_only_one_has_null_property()
+        {
+            var command1 = new BroadcastSignalRMessage(null);
+            var command2 = new BroadcastSignalRMessage(new SignalRMessage());
+
+            CommandEqualityComparer.Instance.Equals(command1, command2).Should().BeFalse();
+        }
+
+
+        [Test]
+        public void should_return_false_when_commands_are_diffrent_types()
+        {
+            CommandEqualityComparer.Instance.Equals(new RssSyncCommand(), new ApplicationUpdateCommand()).Should().BeFalse();
+        }
+
+  
     }
 }
diff --git a/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj b/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
index 38660dd5d..3dd0c3d08 100644
--- a/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
+++ b/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
@@ -232,6 +232,10 @@
       <Project>{FF5EE3B6-913B-47CE-9CEB-11C51B4E1205}</Project>
       <Name>NzbDrone.Core</Name>
     </ProjectReference>
+    <ProjectReference Include="..\NzbDrone.SignalR\NzbDrone.SignalR.csproj">
+      <Project>{7C2CC69F-5CA0-4E5C-85CB-983F9F6C3B36}</Project>
+      <Name>NzbDrone.SignalR</Name>
+    </ProjectReference>
     <ProjectReference Include="..\NzbDrone.Test.Common\NzbDrone.Test.Common.csproj">
       <Project>{CADDFCE0-7509-4430-8364-2074E1EEFCA2}</Project>
       <Name>NzbDrone.Test.Common</Name>
diff --git a/NzbDrone.Core/Messaging/Commands/CommandEqualityComparer.cs b/NzbDrone.Core/Messaging/Commands/CommandEqualityComparer.cs
index d6af0276d..2b24895f1 100644
--- a/NzbDrone.Core/Messaging/Commands/CommandEqualityComparer.cs
+++ b/NzbDrone.Core/Messaging/Commands/CommandEqualityComparer.cs
@@ -14,6 +14,8 @@ namespace NzbDrone.Core.Messaging.Commands
 
         public bool Equals(Command x, Command y)
         {
+            if(x.GetType() != y.GetType()) return false;
+
             var xProperties = x.GetType().GetProperties();
             var yProperties = y.GetType().GetProperties();
 
@@ -24,12 +26,7 @@ namespace NzbDrone.Core.Messaging.Commands
                     continue;
                 }
 
-                var yProperty = yProperties.SingleOrDefault(p => p.Name == xProperty.Name);
-
-                if (yProperty == null)
-                {
-                    continue;
-                }
+                var yProperty = yProperties.Single(p => p.Name == xProperty.Name);
 
                 var xValue = xProperty.GetValue(x, null);
                 var yValue = yProperty.GetValue(y, null);
diff --git a/NzbDrone.SignalR/BroadcastSignalRMessage.cs b/NzbDrone.SignalR/BroadcastSignalRMessage.cs
index d540ab6fc..d989affc3 100644
--- a/NzbDrone.SignalR/BroadcastSignalRMessage.cs
+++ b/NzbDrone.SignalR/BroadcastSignalRMessage.cs
@@ -1,6 +1,8 @@
+using NzbDrone.Core.Messaging.Commands;
+
 namespace NzbDrone.SignalR
 {
-    public class BroadcastSignalRMessage : Core.Messaging.Commands.Command
+    public class BroadcastSignalRMessage : Command
     {
         public SignalRMessage Body { get; private set; }