diff --git a/frontend/src/Settings/Profiles/Release/EditReleaseProfileModalContentConnector.js b/frontend/src/Settings/Profiles/Release/EditReleaseProfileModalContentConnector.js
index 7c9177194..b31e86eec 100644
--- a/frontend/src/Settings/Profiles/Release/EditReleaseProfileModalContentConnector.js
+++ b/frontend/src/Settings/Profiles/Release/EditReleaseProfileModalContentConnector.js
@@ -9,8 +9,8 @@ import EditReleaseProfileModalContent from './EditReleaseProfileModalContent';
 
 const newReleaseProfile = {
   enabled: true,
-  required: '',
-  ignored: '',
+  required: [],
+  ignored: [],
   preferred: [],
   includePreferredWhenRenaming: false,
   tags: [],
diff --git a/frontend/src/Settings/Profiles/Release/ReleaseProfile.js b/frontend/src/Settings/Profiles/Release/ReleaseProfile.js
index 86901f8ee..b1e0693b0 100644
--- a/frontend/src/Settings/Profiles/Release/ReleaseProfile.js
+++ b/frontend/src/Settings/Profiles/Release/ReleaseProfile.js
@@ -197,8 +197,8 @@ ReleaseProfile.propTypes = {
 
 ReleaseProfile.defaultProps = {
   enabled: true,
-  required: '',
-  ignored: '',
+  required: [],
+  ignored: [],
   preferred: [],
   indexerId: 0
 };
diff --git a/src/Lidarr.Api.V1/Profiles/Release/ReleaseProfileResource.cs b/src/Lidarr.Api.V1/Profiles/Release/ReleaseProfileResource.cs
index 203186fa5..c66941b31 100644
--- a/src/Lidarr.Api.V1/Profiles/Release/ReleaseProfileResource.cs
+++ b/src/Lidarr.Api.V1/Profiles/Release/ReleaseProfileResource.cs
@@ -17,6 +17,9 @@ namespace Lidarr.Api.V1.Profiles.Release
 
         public ReleaseProfileResource()
         {
+            Required = new List<string>();
+            Ignored = new List<string>();
+            Preferred = new List<KeyValuePair<string, int>>();
             Tags = new HashSet<int>();
         }
     }