diff --git a/index.html b/index.html
index b8441ef..2af15ca 100644
--- a/index.html
+++ b/index.html
@@ -21,6 +21,7 @@ <h1 class="text-center">Sun Synchronous Orbit Calculator</h1><br>
                 <select class="form-control" id="system" name="system">
                     <option value="Stock">Stock</option>
                     <option value="RealSolarSystem">RealSolarSystem</option>
+                    <option value="KcalbelohSystem">KcalbelohSystem</option>
                 </select>
             </div>
         </div>
@@ -77,7 +78,7 @@ <h4 class="alert-heading">Input Data Warning</h4><br>
     <div class="alert alert-info mt-4" role="alert">
         <h4 class="alert-heading">Notice</h4><br>
         <p>For RealSolarSystem (RSS), only calculations are provided, not the ability to generate profiles.</p>
-        <p>For using Planet Stock, you need to put the files provided in GitHub or spacedock into GameData as well.</p>
+        <p>For using Planet Stock, you need to put the files provided in GitHub or spacedock into GameData as well. (Except KcalbelohSystem)</p>
     </div>