diff --git a/lib/imap.c b/lib/imap.c
index 22a0c4246..6b6d4ce45 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -579,9 +579,9 @@ static CURLcode imap_perform_authenticate(struct connectdata *conn)
   }
   else
 #endif
-
   if((imapc->authmechs & SASL_MECH_XOAUTH2) &&
-     (imapc->prefmech & SASL_MECH_XOAUTH2)) {
+     (imapc->prefmech & SASL_MECH_XOAUTH2) &&
+     (imapc->prefmech != SASL_AUTH_ANY) || conn->xoauth2_bearer) {
     mech = "XOAUTH2";
     state1 = IMAP_AUTHENTICATE_XOAUTH2;
     state2 = IMAP_AUTHENTICATE_FINAL;
diff --git a/lib/smtp.c b/lib/smtp.c
index f2c79794c..c3650e1d9 100644
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -500,9 +500,9 @@ static CURLcode smtp_perform_authenticate(struct connectdata *conn)
     }
   else
 #endif
-
   if((smtpc->authmechs & SASL_MECH_XOAUTH2) &&
-     (smtpc->prefmech & SASL_MECH_XOAUTH2)) {
+     (smtpc->prefmech & SASL_MECH_XOAUTH2) &&
+     (smtpc->prefmech != SASL_AUTH_ANY) || conn->xoauth2_bearer) {
     mech = "XOAUTH2";
     state1 = SMTP_AUTH_XOAUTH2;
     state2 = SMTP_AUTH_FINAL;