diff --git a/climada/engine/test/test_forecast.py b/climada/engine/test/test_forecast.py
index 2986ad3ceb..ef249ae203 100644
--- a/climada/engine/test/test_forecast.py
+++ b/climada/engine/test/test_forecast.py
@@ -110,12 +110,12 @@ def test_Forecast_plot(self):
             HAZ_DIR.joinpath('storm_europe_cosmoe_forecast_vmax_testfile.nc'),
             run_datetime=dt.datetime(2018,1,1),
             event_date=dt.datetime(2018,1,3))
-        haz1.centroids.gdf.geometry.translate(-1.2, 0.6)
+        haz1.centroids.gdf.geometry = haz1.centroids.gdf.geometry.translate(-1.2, 0.6)
         haz2 = StormEurope.from_cosmoe_file(
             HAZ_DIR.joinpath('storm_europe_cosmoe_forecast_vmax_testfile.nc'),
             run_datetime=dt.datetime(2018,1,1),
             event_date=dt.datetime(2018,1,3))
-        haz2.centroids.gdf.geometry.translate(-1.2, 0.6)
+        haz2.centroids.gdf.geometry = haz2.centroids.gdf.geometry.translate(-1.2, 0.6)
         #exposure
         data = {}
         data['latitude'] = haz1.centroids.lat