diff --git a/GridBlazor/GridBlazor.csproj b/GridBlazor/GridBlazor.csproj
index 5ae4e530..28020438 100644
--- a/GridBlazor/GridBlazor.csproj
+++ b/GridBlazor/GridBlazor.csproj
@@ -6,7 +6,7 @@
     <LangVersion>8.0</LangVersion>
     <GenerateEmbeddedFilesManifest>True</GenerateEmbeddedFilesManifest>
     <EnableDefaultEmbeddedResourceItems>False</EnableDefaultEmbeddedResourceItems>
-    <Version>3.2.8</Version>
+    <Version>3.2.9</Version>
     <Title>GridBlazor</Title>
     <Description>Grid components for Blazor</Description>
     <Summary>Grid components for Blazor</Summary>
diff --git a/GridBlazor/Pages/GridHeaderComponent.razor b/GridBlazor/Pages/GridHeaderComponent.razor
index ddbf6323..0a661a60 100644
--- a/GridBlazor/Pages/GridHeaderComponent.razor
+++ b/GridBlazor/Pages/GridHeaderComponent.razor
@@ -7,8 +7,7 @@
     @ondragenter="HandleDragEnter" 
     @ondragleave="HandleDragLeave" 
     @ondrop="HandleDrop" 
-    ondragover="event.preventDefault();"
->
+    ondragover="event.preventDefault();">
     <div class="grid-header-group">
         @if (GridComponent.Grid.RearrangeColumnEnabled
                 && !string.IsNullOrEmpty(_dropClass))
diff --git a/GridBlazor/Pages/GridHeaderComponent.razor.cs b/GridBlazor/Pages/GridHeaderComponent.razor.cs
index 67c9d179..a08e8cef 100644
--- a/GridBlazor/Pages/GridHeaderComponent.razor.cs
+++ b/GridBlazor/Pages/GridHeaderComponent.razor.cs
@@ -355,6 +355,7 @@ private async Task RowCheckboxChanged(CheckboxEventArgs<T> e)
                     }
                     else
                     {
+                        _allChecked = null;
                         _showAllChecked = false;
                     }
                 }