diff --git a/addons/mail/static/src/models/partner.js b/addons/mail/static/src/models/partner.js
index f44637db065..ad1649869cf 100644
--- a/addons/mail/static/src/models/partner.js
+++ b/addons/mail/static/src/models/partner.js
@@ -137,8 +137,8 @@ registerModel({
                         return 1;
                     }
                 }
-                const cleanedAName = cleanSearchTerm(a.nameOrDisplayName || '');
-                const cleanedBName = cleanSearchTerm(b.nameOrDisplayName || '');
+                const cleanedAName = cleanSearchTerm(a.name || '');
+                const cleanedBName = cleanSearchTerm(b.name || '');
                 if (cleanedAName.startsWith(cleanedSearchTerm) && !cleanedBName.startsWith(cleanedSearchTerm)) {
                     return -1;
                 }
@@ -242,8 +242,11 @@ registerModel({
                     // partners (livechat guests), public partners (technical)
                     continue;
                 }
+                if (!partner.name) {
+                    continue;
+                }
                 if (
-                    (partner.nameOrDisplayName && cleanSearchTerm(partner.nameOrDisplayName).includes(cleanedSearchTerm)) ||
+                    (cleanSearchTerm(partner.name).includes(cleanedSearchTerm)) ||
                     (partner.email && cleanSearchTerm(partner.email).includes(cleanedSearchTerm))
                 ) {
                     if (partner.user) {