diff --git a/metadata-ingestion/src/datahub/configuration/common.py b/metadata-ingestion/src/datahub/configuration/common.py
index 067370e4ba123c..0484bfc3190dbc 100644
--- a/metadata-ingestion/src/datahub/configuration/common.py
+++ b/metadata-ingestion/src/datahub/configuration/common.py
@@ -105,7 +105,7 @@ class OauthConfiguration(ConfigModel):
     scopes: Optional[List[str]] = Field(
         description="scopes required to connect to snowflake"
     )
-    use_certificate: Optional[bool] = Field(
+    use_certificate: bool = Field(
         description="Do you want to use certificate and private key to authenticate using oauth",
         default=False,
     )
diff --git a/metadata-ingestion/src/datahub/ingestion/source_config/sql/snowflake.py b/metadata-ingestion/src/datahub/ingestion/source_config/sql/snowflake.py
index 4018692ac82fcd..8202f877d6274a 100644
--- a/metadata-ingestion/src/datahub/ingestion/source_config/sql/snowflake.py
+++ b/metadata-ingestion/src/datahub/ingestion/source_config/sql/snowflake.py
@@ -213,12 +213,12 @@ def authenticator_type_is_valid(cls, v, values, field):
                     f"but should be set when using {v} authentication"
                 )
             if values.get("oauth_config").use_certificate is True:
-                if values.get("oauth_config").base64_encoded_oauth_private_key is None:
+                if values.get("oauth_config").encoded_oauth_private_key is None:
                     raise ValueError(
                         "'base64_encoded_oauth_private_key' was none "
                         "but should be set when using certificate for oauth_config"
                     )
-                if values.get("oauth").base64_encoded_oauth_public_key is None:
+                if values.get("oauth").encoded_oauth_public_key is None:
                     raise ValueError(
                         "'base64_encoded_oauth_public_key' was none"
                         "but should be set when using use_certificate true for oauth_config"