diff --git a/lib/transport_helper.dart b/lib/transport_helper.dart
index 3ab258e..2694410 100644
--- a/lib/transport_helper.dart
+++ b/lib/transport_helper.dart
@@ -173,6 +173,8 @@ class Route {
     id = await database.update(
       "route",
       toMapRoute(),
+      where: "id = ?",
+      whereArgs: [id],
       conflictAlgorithm: ConflictAlgorithm.replace,
     );
   }
@@ -184,6 +186,8 @@ class Route {
       database.update(
         "routesegments",
         routeSegments[i],
+        where: "route = ? AND segmentoder = ?",
+        whereArgs: [id, i],
       );
     }
   }
@@ -313,7 +317,12 @@ class Segment {
 
   void dbUpdate() async {
     Database database = DbHelper.db;
-    id = await database.update(tableName, toMap());
+    id = await database.update(
+      tableName,
+      toMap(),
+      where: "rowid =?",
+      whereArgs: [id],
+    );
   }
 
   void dbDelete() {
@@ -432,14 +441,19 @@ class Station {
 
   void dbUpdate() async {
     Database database = DbHelper.db;
-    database.update(tableName, toMap());
+    database.update(tableName, toMap(), where: "id = ?", whereArgs: [id]);
   }
 
   void dbUpdateStationLines() async {
     Database database = DbHelper.db;
     var stationLines = toMapLines();
     for (var i = 0; i < stationLines.length; i++) {
-      database.update("stationlines", stationLines[i]);
+      database.update(
+        "stationlines",
+        stationLines[i],
+        where: "stationid = ? AND lineid = ?",
+        whereArgs: [id, stationLines[i]["lineid"]],
+      );
     }
   }
 
@@ -517,7 +531,7 @@ class Vehicle {
 
   void dbUpdate() async {
     Database database = DbHelper.db;
-    database.update(tableName, toMap());
+    database.update(tableName, toMap(), where: "id=?", whereArgs: [id]);
   }
 
   void dbDelete() async {
@@ -621,7 +635,12 @@ class Line {
 
   void dbUpdate() async {
     Database database = DbHelper.db;
-    database.update(tableName, toMap());
+    database.update(
+      tableName,
+      toMap(),
+      where: "lineid = ?",
+      whereArgs: [lineId],
+    );
   }
 
   void dbDelete() async {
@@ -732,7 +751,12 @@ class Departure {
 
   void dbUpdate() async {
     Database database = DbHelper.db;
-    id = await database.update(tableName, toMap());
+    id = await database.update(
+      tableName,
+      toMap(),
+      where: "id = ?",
+      whereArgs: [id],
+    );
   }
 
   void dbDelete() async {