diff --git a/lib/galaxy/authnz/psa_authnz.py b/lib/galaxy/authnz/psa_authnz.py
index b6a5ad8eea3..61c12f54ff0 100644
--- a/lib/galaxy/authnz/psa_authnz.py
+++ b/lib/galaxy/authnz/psa_authnz.py
@@ -114,8 +114,10 @@ class PSAAuthnz(IdentityProvider):
 
         # Secondary AuthZ with Google identities is currently supported
         if provider != "google":
-            del self.config["SOCIAL_AUTH_SECONDARY_AUTH_PROVIDER"]
-            del self.config["SOCIAL_AUTH_SECONDARY_AUTH_ENDPOINT"]
+            if 'SOCIAL_AUTH_SECONDARY_AUTH_PROVIDER' in self.config:
+                del self.config["SOCIAL_AUTH_SECONDARY_AUTH_PROVIDER"]
+            if 'SOCIAL_AUTH_SECONDARY_AUTH_ENDPOINT' in self.config:
+                del self.config["SOCIAL_AUTH_SECONDARY_AUTH_ENDPOINT"]
 
     def _setup_idp(self, oidc_backend_config):
         self.config[setting_name('AUTH_EXTRA_ARGUMENTS')] = {'access_type': 'offline'}