diff --git a/assets/themes/grb_import/grb.json b/assets/themes/grb_import/grb.json
index 8e8a2491d0..8df3955e29 100644
--- a/assets/themes/grb_import/grb.json
+++ b/assets/themes/grb_import/grb.json
@@ -455,7 +455,9 @@
       "id": "GRB",
       "description": "Geometry which comes from GRB with tools to import them",
       "source": {
-        "osmTags": "HUISNR~*",
+        "osmTags": {
+         "and": ["HUISNR~*","man_made!=mast"]
+        },
         "geoJson": "https://betadata.grbosm.site/grb?bbox={x_min},{y_min},{x_max},{y_max}",
         "geoJsonZoomLevel": 18,
         "mercatorCrs": true,