diff --git a/backend/src/Squidex.Domain.Apps.Entities/Contents/GraphQL/Types/Contents/FieldVisitor.cs b/backend/src/Squidex.Domain.Apps.Entities/Contents/GraphQL/Types/Contents/FieldVisitor.cs
index 1eb3fb55e..4d412f37b 100644
--- a/backend/src/Squidex.Domain.Apps.Entities/Contents/GraphQL/Types/Contents/FieldVisitor.cs
+++ b/backend/src/Squidex.Domain.Apps.Entities/Contents/GraphQL/Types/Contents/FieldVisitor.cs
@@ -128,6 +128,11 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL.Types.Contents
 
                 if (source.TryGetValue(key, out var value))
                 {
+                    if (value is JsonNull)
+                    {
+                        return null;
+                    }
+
                     return valueResolver(value, fieldContext, context);
                 }
 
diff --git a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/GraphQLTestBase.cs b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/GraphQLTestBase.cs
index df1bf7151..a6968bb47 100644
--- a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/GraphQLTestBase.cs
+++ b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/GraphQLTestBase.cs
@@ -69,35 +69,37 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                         new JsonFieldProperties())
                     .AddString(2, "my-string", Partitioning.Language,
                         new StringFieldProperties())
-                    .AddNumber(3, "my-number", Partitioning.Invariant,
+                    .AddString(3, "my-string2", Partitioning.Invariant,
+                        new StringFieldProperties())
+                    .AddString(4, "my-localized", Partitioning.Language,
+                        new StringFieldProperties())
+                    .AddNumber(5, "my-number", Partitioning.Invariant,
                         new NumberFieldProperties())
-                    .AddNumber(4, "my_number", Partitioning.Invariant,
+                    .AddNumber(6, "my_number", Partitioning.Invariant,
                         new NumberFieldProperties())
-                    .AddAssets(5, "my-assets", Partitioning.Invariant,
+                    .AddAssets(7, "my-assets", Partitioning.Invariant,
                         new AssetsFieldProperties())
-                    .AddBoolean(6, "my-boolean", Partitioning.Invariant,
+                    .AddBoolean(8, "my-boolean", Partitioning.Invariant,
                         new BooleanFieldProperties())
-                    .AddDateTime(7, "my-datetime", Partitioning.Invariant,
+                    .AddDateTime(9, "my-datetime", Partitioning.Invariant,
                         new DateTimeFieldProperties())
-                    .AddReferences(8, "my-references", Partitioning.Invariant,
+                    .AddReferences(10, "my-references", Partitioning.Invariant,
                         new ReferencesFieldProperties { SchemaId = schemaRefId1.Id })
-                    .AddReferences(81, "my-union", Partitioning.Invariant,
+                    .AddReferences(11, "my-union", Partitioning.Invariant,
                         new ReferencesFieldProperties())
-                    .AddReferences(9, "my-invalid", Partitioning.Invariant,
+                    .AddReferences(12, "my-invalid", Partitioning.Invariant,
                         new ReferencesFieldProperties { SchemaId = DomainId.NewGuid() })
-                    .AddGeolocation(10, "my-geolocation", Partitioning.Invariant,
+                    .AddGeolocation(13, "my-geolocation", Partitioning.Invariant,
                         new GeolocationFieldProperties())
-                    .AddTags(11, "my-tags", Partitioning.Invariant,
+                    .AddTags(14, "my-tags", Partitioning.Invariant,
                         new TagsFieldProperties())
-                    .AddString(12, "my-localized", Partitioning.Language,
-                        new StringFieldProperties())
-                    .AddArray(13, "my-array", Partitioning.Invariant, f => f
+                    .AddArray(15, "my-array", Partitioning.Invariant, f => f
                         .AddBoolean(121, "nested-boolean")
                         .AddNumber(122, "nested-number")
                         .AddNumber(123, "nested_number"))
-                    .AddNumber(14, "2_numbers", Partitioning.Invariant,
+                    .AddNumber(16, "2_numbers", Partitioning.Invariant,
                         new NumberFieldProperties())
-                    .AddNumber(15, "2-numbers", Partitioning.Invariant,
+                    .AddNumber(17, "2-numbers", Partitioning.Invariant,
                         new NumberFieldProperties())
                     .SetScripts(new SchemaScripts { Query = "<query-script>" });
 
diff --git a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/TestContent.cs b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/TestContent.cs
index 771041ca2..eb4e4cccc 100644
--- a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/TestContent.cs
+++ b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/GraphQL/TestContent.cs
@@ -35,6 +35,9 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                 myString {
                     de
                 }
+                myString2 {
+                    iv
+                }
                 myNumber {
                     iv
                 }
@@ -77,6 +80,9 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                     .AddField("my-string",
                         new ContentFieldData()
                             .AddLocalized("de", "value"))
+                    .AddField("my-string2",
+                        new ContentFieldData()
+                            .AddInvariant(null))
                     .AddField("my-assets",
                         new ContentFieldData()
                             .AddInvariant(JsonValue.Array(assetId.ToString())))
@@ -91,7 +97,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                             .AddInvariant(1.0))
                     .AddField("my_number",
                         new ContentFieldData()
-                            .AddInvariant(2.0))
+                            .AddInvariant(null))
                     .AddField("my-boolean",
                         new ContentFieldData()
                             .AddInvariant(true))
@@ -120,13 +126,13 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                         new ContentFieldData()
                             .AddInvariant(JsonValue.Array(
                                 JsonValue.Object()
-                                    .Add("nested-boolean", true)
                                     .Add("nested-number", 10)
-                                    .Add("nested_number", 11),
+                                    .Add("nested_number", null)
+                                    .Add("nested-boolean", true),
                                 JsonValue.Object()
-                                    .Add("nested-boolean", false)
                                     .Add("nested-number", 20)
-                                    .Add("nested_number", 21))));
+                                    .Add("nested_number", null)
+                                    .Add("nested-boolean", false))));
 
             var content = new ContentEntity
             {
@@ -206,13 +212,17 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                 {
                     de = "value"
                 },
+                ["myString2"] = new
+                {
+                    iv = (object?)null
+                },
                 ["myNumber"] = new
                 {
                     iv = 1.0
                 },
                 ["myNumber2"] = new
                 {
-                    iv = 2.0
+                    iv = (object?)null
                 },
                 ["myBoolean"] = new
                 {
@@ -256,13 +266,13 @@ namespace Squidex.Domain.Apps.Entities.Contents.GraphQL
                         new
                         {
                             nestedNumber = 10.0,
-                            nestedNumber2 = 11.0,
+                            nestedNumber2 = (object?)null,
                             nestedBoolean = true
                         },
                         new
                         {
                             nestedNumber = 20.0,
-                            nestedNumber2 = 21.0,
+                            nestedNumber2 = (object?)null,
                             nestedBoolean = false
                         }
                     }