diff --git a/nes/nc_projections/lcc_nes.py b/nes/nc_projections/lcc_nes.py
index 610397631bf6a1692ffbca3bb6368aa88012f9c7..e2cb6c651f603e7150d99e0603623a7a802c3401 100644
--- a/nes/nc_projections/lcc_nes.py
+++ b/nes/nc_projections/lcc_nes.py
@@ -152,9 +152,9 @@ class LCCNes(Nes):
             projection_data = {'data': None,
                                'dimensions': (),
                                'grid_mapping_name': 'lambert_conformal_conic',
-                               'standard_parallel':  [kwargs['lat_1'], kwargs['lat_2']],
-                               'longitude_of_central_meridian': kwargs['lon_0'],
-                               'latitude_of_projection_origin': kwargs['lat_0'],
+                               'standard_parallel':  [str(kwargs['lat_1']), str(kwargs['lat_2'])],
+                               'longitude_of_central_meridian': str(kwargs['lon_0']),
+                               'latitude_of_projection_origin': str(kwargs['lat_0']),
                                }
 
         else: