diff --git a/content/home.php b/content/home.php
index 4a4eb9e..ea09502 100644
--- a/content/home.php
+++ b/content/home.php
@@ -64,21 +64,21 @@ try {
         <div class="container">
             <a href="index.php?pfad=informatik" class="category-link">Informatik</a>
             <div class="article-link">
-                <a href="datenschutzVSdatensicherheit.php"><?php if(isset($dummy3)){if($dummy3->getTitle() != ""){echo $dummy3->getTitle();}else{echo "Dummy leer";}}else{echo "Fehler";} ?></a>
+                <a href="datenschutzVSdatensicherheit.php"><?php if(!isset($dummy3)){if($dummy3->getTitle() != ""){echo $dummy3->getTitle();}else{echo "Dummy leer";}}else{echo "Fehler";} ?></a>
             </div>
         </div>
 
         <div class="container">
             <a href="index.php?pfad=mathe" class="category-link">Mathe</a>
             <div class="article-link">
-                <a href="pythagoras.php"><?php if(isset($dummy1)){echo $dummy1->getTitle();}else{echo "Fehler";} ?></a>
+                <a href="pythagoras.php"><?php if(!isset($dummy1)){echo $dummy1->getTitle();}else{echo "Fehler";} ?></a>
             </div>
         </div>
         
         <div class="container">
             <a href="index.php?pfad=physik" class="category-link">Physik</a>
             <div class="article-link">
-                <a href="tunneleffekt.php"><?php if(isset($dummy2)){echo $dummy2->getTitle();}else{echo "Fehler";} ?></a>
+                <a href="tunneleffekt.php"><?php if(!isset($dummy2)){echo $dummy2->getTitle();}else{echo "Fehler";} ?></a>
             </div>
         </div>
     </div>