diff --git a/ymraster/driver_ext.py b/ymraster/driver_ext.py
index 699c7ca955a50b92fbb9ec5414f6599b72d51384..60e5000f94df3e3cd1f1566803fb44a6b6d1873b 100755
--- a/ymraster/driver_ext.py
+++ b/ymraster/driver_ext.py
@@ -18,7 +18,8 @@ class DriverExt(GenericDriverExt):
 
     drivername_map = {'.tif': 'GTiff',
                       '.h5': 'HDF5',
-                      '.ers': 'ERS'}
+                      '.ers': 'ERS',
+                      '.vrt': 'VRT'}
 
     __slots__ = ()