diff --git a/src/SlatedGameToolkit.Framework/Graphics/Render/MeshBatchRenderer.cs b/src/SlatedGameToolkit.Framework/Graphics/Render/MeshBatchRenderer.cs
index 355ae3b..0033a79 100644
--- a/src/SlatedGameToolkit.Framework/Graphics/Render/MeshBatchRenderer.cs
+++ b/src/SlatedGameToolkit.Framework/Graphics/Render/MeshBatchRenderer.cs
@@ -136,6 +136,7 @@ namespace SlatedGameToolkit.Framework.Graphics.Render
         /// </summary>
         /// <param name="mesh">Draws the given mesh.</param>
         public virtual void Draw(IMesh mesh) {
+            if (!Batching) throw new InvalidOperationException("This batch has not been begun.");
             IPositionInterpolable moveable = mesh as IPositionInterpolable;
             if (moveable != null) {
                 moveable.InterpolatePosition(batchDelta);
@@ -188,11 +189,12 @@ namespace SlatedGameToolkit.Framework.Graphics.Render
         
         public virtual void End() {
             if (!Batching) throw new InvalidOperationException("This batch was never started.");
-            this.Batching = false;
             Flush();
+            this.Batching = false;
         }
 
         public virtual void Flush() {
+            if (!Batching) throw new InvalidOperationException("This batch has not been begun.");
             if (offsetIndex == 0) return;
             if (texture != null) {
                 GLContext.BindTexture(TextureTarget.Texture2D, texture.Handle);