diff --git a/main.py b/main.py
index b8bd6e2..49c8be4 100644
--- a/main.py
+++ b/main.py
@@ -1,10 +1,17 @@
 """ used for argument parsing and starting the server """
+import os
 import argparse
 from server import server
 from database import mate_erstellen
 
 def main():
     """ entrypoint to program """
+
+    # check if run with run.sh
+    if os.getenv('RUN_WITH_SH') != '1':
+        print("Bitte starte das Programm mit dem Startskript `run.sh`!")
+        exit(1)
+
     parser = argparse.ArgumentParser(
                         prog = 'Party Controller',
                         description = 'Manage LAN Parties',
@@ -29,5 +36,6 @@ def main():
     else:
         parser.print_help()
 
+
 if __name__ == "__main__":
     exit(main())
diff --git a/run.sh b/run.sh
index dbbef97..4ca1346 100755
--- a/run.sh
+++ b/run.sh
@@ -10,6 +10,9 @@ fi
 if [ ! -e ./Config/log/chat.log ]; then
     touch ./Config/log/chat.log
 fi
+
+export RUN_WITH_SH=1
+
 export FLASK_APP=main.py