diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 9faec8d..7f63fb1 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -10,8 +10,7 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="42ed9a51-9564-48c5-b5fa-035301b1578d" name="Changes" comment="">
-      <change afterPath="$PROJECT_DIR$/ext_01/quick.py" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/ext_02/exercise.r" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/_pruefung/empty.txt" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -212,6 +211,7 @@
       <workItem from="1707215006454" duration="7963000" />
       <workItem from="1708350583995" duration="9077000" />
       <workItem from="1708463558300" duration="3000" />
+      <workItem from="1708463892885" duration="219000" />
     </task>
     <servers />
   </component>
diff --git a/_pruefung/empty.txt b/_pruefung/empty.txt
new file mode 100644
index 0000000..26eb25c
--- /dev/null
+++ b/_pruefung/empty.txt
@@ -0,0 +1 @@
+Ad astra per aspera.
\ No newline at end of file