diff --git a/src/NzbDrone.Core.Test/DecisionEngineTests/RssSync/IndexerTagSpecificationFixture.cs b/src/NzbDrone.Core.Test/DecisionEngineTests/RssSync/IndexerTagSpecificationFixture.cs
index 7ce13fde0..53c19b1ea 100644
--- a/src/NzbDrone.Core.Test/DecisionEngineTests/RssSync/IndexerTagSpecificationFixture.cs
+++ b/src/NzbDrone.Core.Test/DecisionEngineTests/RssSync/IndexerTagSpecificationFixture.cs
@@ -1,8 +1,9 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using FizzWare.NBuilder;
 using FluentAssertions;
 using Moq;
 using NUnit.Framework;
+using NzbDrone.Core.Datastore;
 using NzbDrone.Core.DecisionEngine.Specifications.RssSync;
 using NzbDrone.Core.Indexers;
 using NzbDrone.Core.IndexerSearch.Definitions;
@@ -31,8 +32,13 @@ namespace NzbDrone.Core.Test.DecisionEngineTests.RssSync
             };
 
             Mocker
-                .GetMock<IIndexerRepository>()
+                .GetMock<IIndexerFactory>()
                 .Setup(m => m.Get(It.IsAny<int>()))
+                .Throws(new ModelNotFoundException(typeof(IndexerDefinition), -1));
+
+            Mocker
+                .GetMock<IIndexerFactory>()
+                .Setup(m => m.Get(1))
                 .Returns(_fakeIndexerDefinition);
 
             _specification = Mocker.Resolve<IndexerTagSpecification>();
@@ -98,5 +104,25 @@ namespace NzbDrone.Core.Test.DecisionEngineTests.RssSync
 
             _specification.IsSatisfiedBy(_parseResultMulti, new MovieSearchCriteria()).Accepted.Should().BeFalse();
         }
+
+        [Test]
+        public void release_without_indexerid_should_return_true()
+        {
+            _fakeIndexerDefinition.Tags = new HashSet<int> { 456 };
+            _fakeMovie.Tags = new HashSet<int> { 123, 789 };
+            _fakeRelease.IndexerId = 0;
+
+            _specification.IsSatisfiedBy(_parseResultMulti, new MovieSearchCriteria { MonitoredEpisodesOnly = true }).Accepted.Should().BeTrue();
+        }
+
+        [Test]
+        public void release_with_invalid_indexerid_should_return_true()
+        {
+            _fakeIndexerDefinition.Tags = new HashSet<int> { 456 };
+            _fakeMovie.Tags = new HashSet<int> { 123, 789 };
+            _fakeRelease.IndexerId = 2;
+
+            _specification.IsSatisfiedBy(_parseResultMulti, new MovieSearchCriteria { MonitoredEpisodesOnly = true }).Accepted.Should().BeTrue();
+        }
     }
 }
diff --git a/src/NzbDrone.Core/DecisionEngine/Specifications/RssSync/IndexerTagSpecification.cs b/src/NzbDrone.Core/DecisionEngine/Specifications/RssSync/IndexerTagSpecification.cs
index cb5d6b508..4f02eb065 100644
--- a/src/NzbDrone.Core/DecisionEngine/Specifications/RssSync/IndexerTagSpecification.cs
+++ b/src/NzbDrone.Core/DecisionEngine/Specifications/RssSync/IndexerTagSpecification.cs
@@ -1,6 +1,7 @@
 using System.Linq;
 using NLog;
 using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Datastore;
 using NzbDrone.Core.Indexers;
 using NzbDrone.Core.IndexerSearch.Definitions;
 using NzbDrone.Core.Parser.Model;
@@ -10,12 +11,12 @@ namespace NzbDrone.Core.DecisionEngine.Specifications.RssSync
     public class IndexerTagSpecification : IDecisionEngineSpecification
     {
         private readonly Logger _logger;
-        private readonly IIndexerRepository _indexerRepository;
+        private readonly IIndexerFactory _indexerFactory;
 
-        public IndexerTagSpecification(Logger logger, IIndexerRepository indexerRepository)
+        public IndexerTagSpecification(Logger logger, IIndexerFactory indexerFactory)
         {
             _logger = logger;
-            _indexerRepository = indexerRepository;
+            _indexerFactory = indexerFactory;
         }
 
         public SpecificationPriority Priority => SpecificationPriority.Default;
@@ -23,8 +24,24 @@ namespace NzbDrone.Core.DecisionEngine.Specifications.RssSync
 
         public virtual Decision IsSatisfiedBy(RemoteMovie subject, SearchCriteriaBase searchCriteria)
         {
+            if (subject.Release == null || subject.Movie?.Tags == null || subject.Release.IndexerId == 0)
+            {
+                return Decision.Accept();
+            }
+
+            IndexerDefinition indexer;
+            try
+            {
+                indexer = _indexerFactory.Get(subject.Release.IndexerId);
+            }
+            catch (ModelNotFoundException)
+            {
+                _logger.Debug("Indexer with id {0} does not exist, skipping indexer tags check", subject.Release.IndexerId);
+                return Decision.Accept();
+            }
+
             // If indexer has tags, check that at least one of them is present on the series
-            var indexerTags = _indexerRepository.Get(subject.Release.IndexerId).Tags;
+            var indexerTags = indexer.Tags;
 
             if (indexerTags.Any() && indexerTags.Intersect(subject.Movie.Tags).Empty())
             {