diff --git a/koha-tmpl/intranet-tmpl/prog/js/vue/components/ERM/EHoldingsLocalPackageResource.vue b/koha-tmpl/intranet-tmpl/prog/js/vue/components/ERM/EHoldingsLocalPackageResource.vue
index 71befaa443..fa28d8e798 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/vue/components/ERM/EHoldingsLocalPackageResource.vue
+++ b/koha-tmpl/intranet-tmpl/prog/js/vue/components/ERM/EHoldingsLocalPackageResource.vue
@@ -311,9 +311,7 @@ export default {
                 errors.push(this.$__("An agreement is used several times"));
             }
 
-            errors.forEach(function (e) {
-                this.setWarning(e);
-            });
+            this.setWarning(errors.join("<br>"));
             return !errors.length;
         },
         onSubmit(e, packageToSave) {
diff --git a/koha-tmpl/intranet-tmpl/prog/js/vue/components/ERM/EHoldingsLocalTitleResource.vue b/koha-tmpl/intranet-tmpl/prog/js/vue/components/ERM/EHoldingsLocalTitleResource.vue
index ae88a4bec9..a32f1c6098 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/vue/components/ERM/EHoldingsLocalTitleResource.vue
+++ b/koha-tmpl/intranet-tmpl/prog/js/vue/components/ERM/EHoldingsLocalTitleResource.vue
@@ -439,9 +439,7 @@ export default {
                 errors.push(this.$__("A package is used several times"));
             }
 
-            errors.forEach(function (e) {
-                this.setWarning(e);
-            });
+            this.setWarning(errors.join("<br>"));
             return !errors.length;
         },
         onSubmit(e, titleToSave) {