diff --git a/frontend/src/Indexer/Add/AddIndexerModalContent.js b/frontend/src/Indexer/Add/AddIndexerModalContent.js
index 5255a4e7c..253703d5d 100644
--- a/frontend/src/Indexer/Add/AddIndexerModalContent.js
+++ b/frontend/src/Indexer/Add/AddIndexerModalContent.js
@@ -15,7 +15,7 @@ import TableBody from 'Components/Table/TableBody';
 import { kinds, scrollDirections } from 'Helpers/Props';
 import getErrorMessage from 'Utilities/Object/getErrorMessage';
 import translate from 'Utilities/String/translate';
-import SelectIndexerRow from './SelectIndexerRow';
+import SelectIndexerRowConnector from './SelectIndexerRowConnector';
 import styles from './AddIndexerModalContent.css';
 
 const columns = [
@@ -219,7 +219,7 @@ class AddIndexerModalContent extends Component {
                   <TableBody>
                     {
                       filteredIndexers.map((indexer) => (
-                        <SelectIndexerRow
+                        <SelectIndexerRowConnector
                           key={indexer.name}
                           implementation={indexer.implementation}
                           {...indexer}
diff --git a/frontend/src/Indexer/Add/SelectIndexerRow.css b/frontend/src/Indexer/Add/SelectIndexerRow.css
index b5e99d910..071e264c9 100644
--- a/frontend/src/Indexer/Add/SelectIndexerRow.css
+++ b/frontend/src/Indexer/Add/SelectIndexerRow.css
@@ -3,3 +3,9 @@
 
   width: 32px;
 }
+
+.alreadyExistsIcon {
+  margin-left: 10px;
+  color: #37bc9b;
+  pointer-events: all;
+}
diff --git a/frontend/src/Indexer/Add/SelectIndexerRow.js b/frontend/src/Indexer/Add/SelectIndexerRow.js
index fbf05e927..481f21016 100644
--- a/frontend/src/Indexer/Add/SelectIndexerRow.js
+++ b/frontend/src/Indexer/Add/SelectIndexerRow.js
@@ -1,7 +1,9 @@
 import PropTypes from 'prop-types';
 import React, { Component } from 'react';
+import Icon from 'Components/Icon';
 import TableRowCell from 'Components/Table/Cells/TableRowCell';
 import TableRowButton from 'Components/Table/TableRowButton';
+import { icons } from 'Helpers/Props';
 import ProtocolLabel from 'Indexer/Index/Table/ProtocolLabel';
 import firstCharToUpper from 'Utilities/String/firstCharToUpper';
 import translate from 'Utilities/String/translate';
@@ -29,7 +31,8 @@ class SelectIndexerRow extends Component {
       protocol,
       privacy,
       name,
-      language
+      language,
+      isExistingIndexer
     } = this.props;
 
     return (
@@ -42,6 +45,16 @@ class SelectIndexerRow extends Component {
 
         <TableRowCell>
           {name}
+          {
+            isExistingIndexer ?
+              <Icon
+                className={styles.alreadyExistsIcon}
+                name={icons.CHECK_CIRCLE}
+                size={15}
+                title={translate('IndexerAlreadySetup')}
+              /> :
+              null
+          }
         </TableRowCell>
 
         <TableRowCell>
@@ -62,7 +75,8 @@ SelectIndexerRow.propTypes = {
   privacy: PropTypes.string.isRequired,
   language: PropTypes.string.isRequired,
   implementation: PropTypes.string.isRequired,
-  onIndexerSelect: PropTypes.func.isRequired
+  onIndexerSelect: PropTypes.func.isRequired,
+  isExistingIndexer: PropTypes.bool.isRequired
 };
 
 export default SelectIndexerRow;
diff --git a/frontend/src/Indexer/Add/SelectIndexerRowConnector.js b/frontend/src/Indexer/Add/SelectIndexerRowConnector.js
new file mode 100644
index 000000000..f507689c8
--- /dev/null
+++ b/frontend/src/Indexer/Add/SelectIndexerRowConnector.js
@@ -0,0 +1,18 @@
+
+import { connect } from 'react-redux';
+import { createSelector } from 'reselect';
+import createExistingIndexerSelector from 'Store/Selectors/createExistingIndexerSelector';
+import SelectIndexerRow from './SelectIndexerRow';
+
+function createMapStateToProps() {
+  return createSelector(
+    createExistingIndexerSelector(),
+    (isExistingIndexer, dimensions) => {
+      return {
+        isExistingIndexer
+      };
+    }
+  );
+}
+
+export default connect(createMapStateToProps)(SelectIndexerRow);
diff --git a/frontend/src/Store/Selectors/createExclusionMovieSelector.js b/frontend/src/Store/Selectors/createExclusionMovieSelector.js
deleted file mode 100644
index 20365e9b5..000000000
--- a/frontend/src/Store/Selectors/createExclusionMovieSelector.js
+++ /dev/null
@@ -1,14 +0,0 @@
-import _ from 'lodash';
-import { createSelector } from 'reselect';
-
-function createExclusionMovieSelector() {
-  return createSelector(
-    (state, { tmdbId }) => tmdbId,
-    (state) => state.settings.importExclusions,
-    (tmdbId, importExclusions) => {
-      return _.some(importExclusions.items, { tmdbId });
-    }
-  );
-}
-
-export default createExclusionMovieSelector;
diff --git a/frontend/src/Store/Selectors/createExistingIndexerSelector.js b/frontend/src/Store/Selectors/createExistingIndexerSelector.js
new file mode 100644
index 000000000..af16973b7
--- /dev/null
+++ b/frontend/src/Store/Selectors/createExistingIndexerSelector.js
@@ -0,0 +1,15 @@
+import _ from 'lodash';
+import { createSelector } from 'reselect';
+import createAllIndexersSelector from './createAllIndexersSelector';
+
+function createExistingIndexerSelector() {
+  return createSelector(
+    (state, { definitionName }) => definitionName,
+    createAllIndexersSelector(),
+    (definitionName, indexers) => {
+      return _.some(indexers, { definitionName });
+    }
+  );
+}
+
+export default createExistingIndexerSelector;
diff --git a/src/NzbDrone.Core/Localization/Core/en.json b/src/NzbDrone.Core/Localization/Core/en.json
index 3e09bea17..2360e55a5 100644
--- a/src/NzbDrone.Core/Localization/Core/en.json
+++ b/src/NzbDrone.Core/Localization/Core/en.json
@@ -169,6 +169,7 @@
   "IllRestartLater": "I'll restart later",
   "IncludeHealthWarningsHelpText": "Include Health Warnings",
   "Indexer": "Indexer",
+  "IndexerAlreadySetup": "At least one instace of indexer is already setup",
   "IndexerAuth": "Indexer Auth",
   "IndexerFlags": "Indexer Flags",
   "IndexerHealthCheckNoIndexers": "No indexers enabled, Prowlarr will not return search results",