diff --git a/sources/gdal/large_image_source_gdal/__init__.py b/sources/gdal/large_image_source_gdal/__init__.py
index 708adbdd2..ca9a8943c 100644
--- a/sources/gdal/large_image_source_gdal/__init__.py
+++ b/sources/gdal/large_image_source_gdal/__init__.py
@@ -91,7 +91,7 @@ class GDALFileTileSource(FileTileSource, metaclass=LruCacheMetaclass):
         'image/tiff': SourcePriority.LOW,
         'image/x-tiff': SourcePriority.LOW,
     }
-    geospatial = True
+    _geospatial_source = True
 
     def __init__(self, path, projection=None, unitsPerPixel=None, **kwargs):
         """
@@ -566,6 +566,14 @@ def getBandInformation(self, statistics=True, dataset=None, **kwargs):
             self._bandInfo = infoSet
         return self._bandInfo
 
+    # @property
+    # def geospatial(self):
+    #     return bool(
+    #         self.dataset.GetProjection() or
+    #         (self.dataset.GetGCPProjection() and self.dataset.GetGCPs()) or
+    #         self.dataset.GetGeoTransform(can_return_null=True) or
+    #         hasattr(self, '_netcdf'))
+
     def getMetadata(self):
         with self._getDatasetLock:
             metadata = {
diff --git a/sources/mapnik/large_image_source_mapnik/__init__.py b/sources/mapnik/large_image_source_mapnik/__init__.py
index 42f90dfe9..61c0dce6f 100644
--- a/sources/mapnik/large_image_source_mapnik/__init__.py
+++ b/sources/mapnik/large_image_source_mapnik/__init__.py
@@ -71,7 +71,6 @@ class MapnikFileTileSource(GDALFileTileSource, metaclass=LruCacheMetaclass):
         'image/tiff': SourcePriority.LOWER,
         'image/x-tiff': SourcePriority.LOWER,
     }
-    geospatial = True
 
     def __init__(self, path, projection=None, unitsPerPixel=None, **kwargs):
         """