diff --git a/src/postgres/lib.rs b/src/postgres/lib.rs
index 2ca74b5a..ff12cf40 100644
--- a/src/postgres/lib.rs
+++ b/src/postgres/lib.rs
@@ -412,6 +412,8 @@ impl InnerPostgresConnection {
             | AuthenticationSCMCredential
             | AuthenticationGSS
             | AuthenticationSSPI => return Some(UnsupportedAuthentication),
+            ErrorResponse { fields } =>
+                return Some(DbError(PostgresDbError::new(fields))),
             _ => fail!()
         }