diff --git a/mailserver.env b/mailserver.env
index d3ea0f14..144fd310 100644
--- a/mailserver.env
+++ b/mailserver.env
@@ -434,9 +434,9 @@ OAUTH2_CLIENT_ID=
 # Specify the OAuth2 client secret
 OAUTH2_CLIENT_SECRET=
 
-# empty => https://oauth2.domain.com/user_info?token=
+# empty => https://oauth2.domain.com/userinfo/
 # Specify the user info endpoint URL of the oauth2 provider
-OAUTH2_TOKENINFO_URL=
+OAUTH2_INTROSPECTION_URL=
 
 # -----------------------------------------------
 # --- LDAP Section ------------------------------
diff --git a/target/dovecot/dovecot-oauth2.conf.ext b/target/dovecot/dovecot-oauth2.conf.ext
index 54ca80d6..600e40a3 100644
--- a/target/dovecot/dovecot-oauth2.conf.ext
+++ b/target/dovecot/dovecot-oauth2.conf.ext
@@ -1,3 +1,3 @@
 client_id = verySecretId
 client_secret = verySecretSecret
-tokeninfo_url = https://oauth2.domain.com/user_info?token=
+introspection_url = https://oauth2.domain.com/userinfo/
diff --git a/target/scripts/startup/variables-stack.sh b/target/scripts/startup/variables-stack.sh
index 1fc2fe85..812db7e5 100644
--- a/target/scripts/startup/variables-stack.sh
+++ b/target/scripts/startup/variables-stack.sh
@@ -156,7 +156,7 @@ function _environment_variables_oauth2() {
 
   VARS[OAUTH2_CLIENT_ID]="${OAUTH2_CLIENT_ID:=}"
   VARS[OAUTH2_CLIENT_SECRET]="${OAUTH2_CLIENT_SECRET:=}"
-  VARS[OAUTH2_TOKENINFO_URL]="${OAUTH2_TOKENINFO_URL:=}"
+  VARS[OAUTH2_INTROSPECTION_URL]="${OAUTH2_INTROSPECTION_URL:=}"
 }
 
 # This function handles environment variables related to LDAP.