diff --git a/plugins/auth-backend/src/providers/saml/provider.ts b/plugins/auth-backend/src/providers/saml/provider.ts
index 8929a1dbf0..a215ebb1e0 100644
--- a/plugins/auth-backend/src/providers/saml/provider.ts
+++ b/plugins/auth-backend/src/providers/saml/provider.ts
@@ -128,7 +128,7 @@ export const createSamlProvider = (
       audience: config.getOptionalString('audience'),
       issuer: config.getString('issuer'),
       cert: config.getString('cert'),
-      privateCert: config.getOptionalString('privateKey'),
+      privateKey: config.getOptionalString('privateKey'),
       authnContext: config.getOptionalStringArray('authnContext'),
       identifierFormat: config.getOptionalString('identifierFormat'),
       decryptionPvk: config.getOptionalString('decryptionPvk'),