diff --git a/services/web/modules/authentication/ldap/index.mjs b/services/web/modules/authentication/ldap/index.mjs
index 244a8db8e7..94743a6611 100644
--- a/services/web/modules/authentication/ldap/index.mjs
+++ b/services/web/modules/authentication/ldap/index.mjs
@@ -1,5 +1,5 @@
 let ldapModule = {}
-if (process.env.EXTERNAL_AUTH.includes('ldap')) {
+if (process.env.EXTERNAL_AUTH?.includes('ldap')) {
   const { default: LDAPModuleManager } = await import('./app/src/LDAPModuleManager.mjs')
   const { default: router } = await import('./app/src/LDAPRouter.mjs')
   LDAPModuleManager.initSettings()
diff --git a/services/web/modules/authentication/oidc/index.mjs b/services/web/modules/authentication/oidc/index.mjs
index 51d9e0d483..f10ff64c82 100644
--- a/services/web/modules/authentication/oidc/index.mjs
+++ b/services/web/modules/authentication/oidc/index.mjs
@@ -1,5 +1,5 @@
 let oidcModule = {}
-if (process.env.EXTERNAL_AUTH.includes('oidc')) {
+if (process.env.EXTERNAL_AUTH?.includes('oidc')) {
   const { default: OIDCModuleManager } = await import('./app/src/OIDCModuleManager.mjs')
   const { default: router } = await import('./app/src/OIDCRouter.mjs')
   OIDCModuleManager.initSettings()
diff --git a/services/web/modules/authentication/saml/index.mjs b/services/web/modules/authentication/saml/index.mjs
index 2d6ee5706c..36f0281637 100644
--- a/services/web/modules/authentication/saml/index.mjs
+++ b/services/web/modules/authentication/saml/index.mjs
@@ -1,5 +1,5 @@
 let samlModule = {}
-if (process.env.EXTERNAL_AUTH.includes('saml')) {
+if (process.env.EXTERNAL_AUTH?.includes('saml')) {
   const { default: SAMLModuleManager } = await import('./app/src/SAMLModuleManager.mjs')
   const { default: router } = await import('./app/src/SAMLRouter.mjs')
   const { default: nonCsrfRouter } = await import('./app/src/SAMLNonCsrfRouter.mjs')