diff --git a/rtk_rover_recorder.py b/rtk_rover_recorder.py
old mode 100755
new mode 100644
index 5ae1a47..e6606ba
--- a/rtk_rover_recorder.py
+++ b/rtk_rover_recorder.py
@@ -416,6 +416,15 @@ class Recorder:
         self.conn.executescript(SCHEMA_SQL)
         self.conn.commit()
 
+        # --- Schema-Version pruefen / setzen ---
+        cur = self.conn.execute("PRAGMA user_version;")
+        version = cur.fetchone()[0]
+
+        if version == 0:
+            print("DB Schema init -> Version 1")
+            self.conn.execute("PRAGMA user_version = 1;")
+            self.conn.commit()
+
         self.session_id: Optional[str] = None
         self.csv_fh = None