diff --git a/luftbildfinder_nrw.py b/luftbildfinder_nrw.py
index a88fe5c..0ae13fc 100644
--- a/luftbildfinder_nrw.py
+++ b/luftbildfinder_nrw.py
@@ -368,29 +368,33 @@ def selected_years():
             new_group = root.insertGroup(0, group_name)
 
             metadata_layers = []
+            added_layers = set()
             for year, date, service, infolayer, layer in selected_years:
-                if not any(item[1] == infolayer for item in metadata_layers):
-                    metadata_layers.append((service, infolayer))
-                BASE_URL = f"https://www.wms.nrw.de/geobasis/{service}"
-                urlWithParams = f"crs=EPSG:25832&format=image/png&layers={layer}&styles&url={BASE_URL}"
-                rlayer = QgsRasterLayer(urlWithParams, f"Luftbild {layer}", "wms")
-                if not rlayer.isValid():
-                    pass
-                else:
-                    QgsProject.instance().addMapLayer(rlayer, False)
-                    new_group.insertLayer(-1, rlayer)
-                    rlayerNode = root.findLayer(rlayer.id())
-                    rlayerNode.setExpanded(False)
-                    QgsProject.instance().addMapLayer(rlayer)
-
-                    self.canvas.flashGeometries(
-                        [QgsGeometry.fromPointXY(original_pt)],
-                        source_crs,
-                        QColor(255, 0, 0, 255),
-                        QColor(255, 0, 0, 255),
-                        int(10),
-                        int(500),
-                    )
+                if layer not in added_layers:
+                    if not any(item[1] == infolayer for item in metadata_layers):
+                        metadata_layers.append((service, infolayer))
+                    BASE_URL = f"https://www.wms.nrw.de/geobasis/{service}"
+                    urlWithParams = f"crs=EPSG:25832&format=image/png&layers={layer}&styles&url={BASE_URL}"
+                    rlayer = QgsRasterLayer(urlWithParams, f"Luftbild {layer}", "wms")
+                    if not rlayer.isValid():
+                        pass
+                    else:
+                        QgsProject.instance().addMapLayer(rlayer, False)
+                        new_group.insertLayer(-1, rlayer)
+                        rlayerNode = root.findLayer(rlayer.id())
+                        rlayerNode.setExpanded(False)
+                        QgsProject.instance().addMapLayer(rlayer)
+
+                        added_layers.add(layer)
+
+                        self.canvas.flashGeometries(
+                            [QgsGeometry.fromPointXY(original_pt)],
+                            source_crs,
+                            QColor(255, 0, 0, 255),
+                            QColor(255, 0, 0, 255),
+                            int(10),
+                            int(500),
+                        )
 
             if self.add_metadata_layer:
                 for service, infolayer in metadata_layers:
diff --git a/metadata.txt b/metadata.txt
index f3aa0a1..fe9a2c5 100644
--- a/metadata.txt
+++ b/metadata.txt
@@ -10,7 +10,7 @@ about=Remark:
       - iDOP
       - vDOP
 tags=dop,idop,vdop,luftbild,luftbilder,nrw
-version=0.4.0
+version=0.5.0
 qgisMinimumVersion=3.16
 author=Kreis Viersen
 email=open@kreis-viersen.de
@@ -24,7 +24,9 @@ icon=luftbildfinder-nrw.png
 
 server=False
 deprecated=False
-changelog=v0.4.0:
+changelog=v0.5.0:
+    - füge Layer bei bestimmten Konstellationen nicht doppelt hinzu
+    v0.4.0:
     - behalte Auswahl wenn Sortierreihenfolge geändert wird
     v0.3.0
     - behebe Fehler bei Option Metadatenlayer