diff --git a/lib/google/ads/google_ads/google_ads_client.rb b/lib/google/ads/google_ads/google_ads_client.rb
index 6c94a9f65..5641d4050 100644
--- a/lib/google/ads/google_ads/google_ads_client.rb
+++ b/lib/google/ads/google_ads/google_ads_client.rb
@@ -225,7 +225,6 @@ def get_updater_proc
         # Provides a Google::Auth::Credentials initialized with a keyfile
         # specified in the config.
         def get_service_account_credentials
-          raise 'config.impersonate required if keyfile specified' unless @config.impersonate
           keyfile = File.read(@config.keyfile)
           keyfile = JSON.parse(keyfile)
           Signet::OAuth2::Client.new(