diff --git a/passerelle/apps/opengis/models.py b/passerelle/apps/opengis/models.py
index e830a364..bfde44ed 100644
--- a/passerelle/apps/opengis/models.py
+++ b/passerelle/apps/opengis/models.py
@@ -218,8 +218,8 @@ class OpenGIS(BaseResource):
                   'lon': {'description': _('Longitude'), 'example_value': '4.78414'},
               })
     def feature_info(self, request, lat, lon):
-        lon_b, lat_b = float(lon) + 0.002, float(lat) + 0.002
-        bbox = self.get_bbox(lon, lat, lon_b, lat_b)
+        lat, lon = float(lat), float(lon)
+        bbox = self.get_bbox(lon - 0.001, lat - 0.001, lon + 0.001, lat + 0.001)
         params = {
             'VERSION': '1.3.0',
             'SERVICE': 'WMS',
@@ -228,8 +228,8 @@ class OpenGIS(BaseResource):
             'STYLES': '',
             'I': '0',
             'J': '0',
-            'HEIGHT': '500',
-            'WIDTH': '500',
+            'HEIGHT': '20',
+            'WIDTH': '20',
             'CRS': self.projection,
             'LAYERS': self.query_layer,
             'QUERY_LAYERS': self.query_layer,
diff --git a/tests/test_opengis.py b/tests/test_opengis.py
index c38a5216..9d12cf75 100644
--- a/tests/test_opengis.py
+++ b/tests/test_opengis.py
@@ -246,7 +246,7 @@ def test_feature_info(mocked_get, app, connector):
     assert endpoint == '/opengis/test/feature_info'
     mocked_get.return_value = utils.FakedResponse(content=FAKE_FEATURE_INFO, status_code=200)
     resp = app.get(endpoint, params={'lat': '45.796890', 'lon': '4.784140'})
-    assert mocked_get.call_args[1]['params']['BBOX'] == '532568.028684,5747860.22776,532790.667665,5748179.56467'
+    assert mocked_get.call_args[1]['params']['BBOX'] == '532456.709193,5747700.5636,532679.348175,5748019.89478'
     assert mocked_get.call_args[1]['params']['CRS'] == 'EPSG:3857'
     assert (resp.json['data']
                      ['cad_cadastrecadparcelle_layer']
@@ -256,7 +256,7 @@ def test_feature_info(mocked_get, app, connector):
     connector.projection = 'EPSG:4326'
     connector.save()
     resp = app.get(endpoint, params={'lat': '45.796890', 'lon': '4.784140'})
-    assert mocked_get.call_args[1]['params']['BBOX'] == '45.796890,4.784140,45.79889,4.78614'
+    assert mocked_get.call_args[1]['params']['BBOX'] == '45.79589,4.78314,45.79789,4.78514'
     assert mocked_get.call_args[1]['params']['CRS'] == 'EPSG:4326'