diff --git a/src/Dynamicweb.DataIntegration.Providers.ODataProvider.csproj b/src/Dynamicweb.DataIntegration.Providers.ODataProvider.csproj
index 940d2f3..cbd7191 100644
--- a/src/Dynamicweb.DataIntegration.Providers.ODataProvider.csproj
+++ b/src/Dynamicweb.DataIntegration.Providers.ODataProvider.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<Version>10.8.8</Version>
+		<Version>10.8.9</Version>
 		<AssemblyVersion>1.0.0.0</AssemblyVersion>
 		<Title>OData Provider</Title>
 		<Description>The Odata Provider lets you fetch and map data from or to any OData endpoint.</Description>
diff --git a/src/ODataSourceReader.cs b/src/ODataSourceReader.cs
index 65038a1..472cec5 100644
--- a/src/ODataSourceReader.cs
+++ b/src/ODataSourceReader.cs
@@ -381,13 +381,13 @@ private string GetFilterStatement(Mapping mapping)
         var groups = mapping.Conditionals.Groups.ToList();
         if (groups.Count > 0)
         {
-            string prependOperator = " And ";
+            string prependOperator = " and ";
             foreach (var group in groups)
             {
                 var filterAsParameters = GetFilterAsParameters(mapping, group.Conditionals);
                 if (filterAsParameters.Any())
                 {
-                    var groupFilter = string.Join($" {group.ConditionalOperator} ", filterAsParameters);
+                    var groupFilter = string.Join($" {group.ConditionalOperator.ToString().ToLower()} ", filterAsParameters);
                     result += $"({groupFilter}){prependOperator}";
                 }
             }