diff --git a/geomagio/ObservatoryMetadata.py b/geomagio/ObservatoryMetadata.py
index 37f602e19459bdd46ad5c8c69c038878f7659d3d..c7a7f50e587f2a359960f0d248790e84cca4da7b 100644
--- a/geomagio/ObservatoryMetadata.py
+++ b/geomagio/ObservatoryMetadata.py
@@ -226,7 +226,7 @@ DEFAULT_METADATA = {
             'elevation': '10',
             'sensor_orientation': 'HDZF',
             'sensor_sampling_rate': 100.0,
-            'declination_base': 12755,
+            'declination_base': 10755,
             'is_gin': False,
             'is_intermagnet': False,
             'conditions_of_use': 'The Conditions of Use for data provided' +
@@ -256,7 +256,7 @@ DEFAULT_METADATA = {
             'elevation': '10',
             'sensor_orientation': 'HDZF',
             'sensor_sampling_rate': 10000.0,
-            'declination_base': 12755,
+            'declination_base': 10755,
             'is_gin': False,
             'is_intermagnet': False,
             'conditions_of_use': 'The Conditions of Use for data provided' +