diff --git a/python/plugins/grassprovider/grass_provider.py b/python/plugins/grassprovider/grass_provider.py
index 4f72a8f8ad9d..61ce5a9b8ab8 100644
--- a/python/plugins/grassprovider/grass_provider.py
+++ b/python/plugins/grassprovider/grass_provider.py
@@ -153,15 +153,6 @@ def svgIconPath(self):
     def versionInfo(self):
         return GrassUtils.installedVersion() or None
 
-    def defaultVectorFileExtension(self, hasGeometry=True):
-        # By default,'gpkg', but if OGR has not been compiled with sqlite3, then
-        # we take "SHP"
-        if 'GPKG' in [o.driverName for o in
-                      QgsVectorFileWriter.ogrDriverList()]:
-            return 'gpkg'
-        else:
-            return 'shp' if hasGeometry else 'dbf'
-
     def supportsNonFileBasedOutput(self):
         """
         GRASS Provider doesn't support non file based outputs