diff --git a/src/Squidex.Read.MongoDb/Contents/Visitors/PropertyVisitor.cs b/src/Squidex.Read.MongoDb/Contents/Visitors/PropertyVisitor.cs
index e972b1b3f..213b098e5 100644
--- a/src/Squidex.Read.MongoDb/Contents/Visitors/PropertyVisitor.cs
+++ b/src/Squidex.Read.MongoDb/Contents/Visitors/PropertyVisitor.cs
@@ -37,10 +37,7 @@ namespace Squidex.Read.MongoDb.Contents.Visitors
                 propertyNames[1] = field.Id.ToString();
             }
 
-            if (char.IsLower(propertyNames[0][0]))
-            {
-                propertyNames[0] = char.ToUpperInvariant(propertyNames[0][0]) + propertyNames[0].Substring(1);
-            }
+            propertyNames[0] = "do";
 
             var propertyName = string.Join(".", propertyNames);
 
diff --git a/tests/Squidex.Read.Tests/MongoDb/Contents/ODataQueryTests.cs b/tests/Squidex.Read.Tests/MongoDb/Contents/ODataQueryTests.cs
index 73828c0f2..ddb7f5d4a 100644
--- a/tests/Squidex.Read.Tests/MongoDb/Contents/ODataQueryTests.cs
+++ b/tests/Squidex.Read.Tests/MongoDb/Contents/ODataQueryTests.cs
@@ -82,7 +82,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_not_operator()
         {
             var i = F("$filter=not endswith(data/firstName/de, 'Sebastian')");
-            var o = C("{ 'Data.1.de' : { '$not' : /Sebastian$/i } }");
+            var o = C("{ 'do.1.de' : { '$not' : /Sebastian$/i } }");
 
             Assert.Equal(o, i);
         }
@@ -91,7 +91,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_starts_with_query()
         {
             var i = F("$filter=startswith(data/firstName/de, 'Sebastian')");
-            var o = C("{ 'Data.1.de' : /^Sebastian/i }");
+            var o = C("{ 'do.1.de' : /^Sebastian/i }");
 
             Assert.Equal(o, i);
         }
@@ -100,7 +100,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_ends_with_query()
         {
             var i = F("$filter=endswith(data/firstName/de, 'Sebastian')");
-            var o = C("{ 'Data.1.de' : /Sebastian$/i }");
+            var o = C("{ 'do.1.de' : /Sebastian$/i }");
 
             Assert.Equal(o, i);
         }
@@ -109,7 +109,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_contains_query()
         {
             var i = F("$filter=contains(data/firstName/de, 'Sebastian')");
-            var o = C("{ 'Data.1.de' : /Sebastian/i }");
+            var o = C("{ 'do.1.de' : /Sebastian/i }");
 
             Assert.Equal(o, i);
         }
@@ -118,7 +118,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_string_equals_query()
         {
             var i = F("$filter=data/firstName/de eq 'Sebastian'");
-            var o = C("{ 'Data.1.de' : 'Sebastian' }");
+            var o = C("{ 'do.1.de' : 'Sebastian' }");
 
             Assert.Equal(o, i);
         }
@@ -127,7 +127,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_datetime_equals_query()
         {
             var i = F("$filter=data/birthday/iv eq 1988-01-19T12:00:00Z");
-            var o = C("{ 'Data.5.iv' : ISODate(\"1988-01-19T12:00:00Z\") }");
+            var o = C("{ 'do.5.iv' : ISODate(\"1988-01-19T12:00:00Z\") }");
 
             Assert.Equal(o, i);
         }
@@ -136,7 +136,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_boolean_equals_query()
         {
             var i = F("$filter=data/isAdmin/iv eq true");
-            var o = C("{ 'Data.3.iv' : true }");
+            var o = C("{ 'do.3.iv' : true }");
 
             Assert.Equal(o, i);
         }
@@ -145,7 +145,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_string_not_equals_query()
         {
             var i = F("$filter=data/firstName/de ne 'Sebastian'");
-            var o = C("{ 'Data.1.de' : { '$ne' : 'Sebastian' } }");
+            var o = C("{ 'do.1.de' : { '$ne' : 'Sebastian' } }");
 
             Assert.Equal(o, i);
         }
@@ -154,7 +154,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_number_less_than_query()
         {
             var i = F("$filter=data/age/iv lt 1");
-            var o = C("{ 'Data.4.iv' : { '$lt' : 1.0 } }");
+            var o = C("{ 'do.4.iv' : { '$lt' : 1.0 } }");
 
             Assert.Equal(o, i);
         }
@@ -163,7 +163,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_number_less_equals_query()
         {
             var i = F("$filter=data/age/iv le 1");
-            var o = C("{ 'Data.4.iv' : { '$lte' : 1.0 } }");
+            var o = C("{ 'do.4.iv' : { '$lte' : 1.0 } }");
 
             Assert.Equal(o, i);
         }
@@ -172,7 +172,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_number_greater_than_query()
         {
             var i = F("$filter=data/age/iv gt 1");
-            var o = C("{ 'Data.4.iv' : { '$gt' : 1.0 } }");
+            var o = C("{ 'do.4.iv' : { '$gt' : 1.0 } }");
 
             Assert.Equal(o, i);
         }
@@ -181,7 +181,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_number_greater_equals_query()
         {
             var i = F("$filter=data/age/iv ge 1");
-            var o = C("{ 'Data.4.iv' : { '$gte' : 1.0 } }");
+            var o = C("{ 'do.4.iv' : { '$gte' : 1.0 } }");
 
             Assert.Equal(o, i);
         }
@@ -190,7 +190,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_and_query()
         {
             var i = F("$filter=data/age/iv eq 1 and data/age/iv eq 2");
-            var o = C("{ '$and' : [{ 'Data.4.iv' : 1.0 }, { 'Data.4.iv' : 2.0 }] }");
+            var o = C("{ '$and' : [{ 'do.4.iv' : 1.0 }, { 'do.4.iv' : 2.0 }] }");
 
             Assert.Equal(o, i);
         }
@@ -199,7 +199,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_create_or_query()
         {
             var i = F("$filter=data/age/iv eq 1 or data/age/iv eq 2");
-            var o = C("{ '$or' : [{ 'Data.4.iv' : 1.0 }, { 'Data.4.iv' : 2.0 }] }");
+            var o = C("{ '$or' : [{ 'do.4.iv' : 1.0 }, { 'do.4.iv' : 2.0 }] }");
 
             Assert.Equal(o, i);
         }
@@ -226,7 +226,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_convert_orderby_with_single_statements()
         {
             var i = S("$orderby=data/age/iv desc");
-            var o = C("{ 'Data.4.iv' : -1 }");
+            var o = C("{ 'do.4.iv' : -1 }");
 
             Assert.Equal(o, i);
         }
@@ -235,7 +235,7 @@ namespace Squidex.Read.MongoDb.Contents
         public void Should_convert_orderby_with_multiple_statements()
         {
             var i = S("$orderby=data/age/iv, data/firstName/en desc");
-            var o = C("{ 'Data.4.iv' : 1, 'Data.1.en' : -1 }");
+            var o = C("{ 'do.4.iv' : 1, 'do.1.en' : -1 }");
 
             Assert.Equal(o, i);
         }