diff --git a/docs/pyerrors/obs.html b/docs/pyerrors/obs.html
index a0bef67a..73709ada 100644
--- a/docs/pyerrors/obs.html
+++ b/docs/pyerrors/obs.html
@@ -1955,7 +1955,7 @@
 <span class="sd">        co : Covobs</span>
 <span class="sd">            Covobs to be embedded into the Obs</span>
 <span class="sd">        &quot;&quot;&quot;</span>
-        <span class="n">o</span> <span class="o">=</span> <span class="n">Obs</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">empty</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
+        <span class="n">o</span> <span class="o">=</span> <span class="n">Obs</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
         <span class="n">o</span><span class="o">.</span><span class="n">_value</span> <span class="o">=</span> <span class="n">co</span><span class="o">.</span><span class="n">value</span>
         <span class="n">o</span><span class="o">.</span><span class="n">names</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">co</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
         <span class="n">o</span><span class="o">.</span><span class="n">covobs</span><span class="p">[</span><span class="n">co</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">co</span>
@@ -5371,7 +5371,7 @@ list of the Obs object to be combined</li>
 <span class="sd">        co : Covobs</span>
 <span class="sd">            Covobs to be embedded into the Obs</span>
 <span class="sd">        &quot;&quot;&quot;</span>
-        <span class="n">o</span> <span class="o">=</span> <span class="n">Obs</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">empty</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
+        <span class="n">o</span> <span class="o">=</span> <span class="n">Obs</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
         <span class="n">o</span><span class="o">.</span><span class="n">_value</span> <span class="o">=</span> <span class="n">co</span><span class="o">.</span><span class="n">value</span>
         <span class="n">o</span><span class="o">.</span><span class="n">names</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">co</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
         <span class="n">o</span><span class="o">.</span><span class="n">covobs</span><span class="p">[</span><span class="n">co</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">co</span>