diff --git a/frappe/email/__init__.py b/frappe/email/__init__.py
index 0f8b879c09..b7c8a92673 100644
--- a/frappe/email/__init__.py
+++ b/frappe/email/__init__.py
@@ -100,7 +100,7 @@ def get_communication_doctype(doctype, txt, searchfield, start, page_len, filter
 	results = []
 	txt_lower = txt.lower().replace("%", "")
 
-	for dt in com_doctypes:
+	for dt in list(set(com_doctypes)):
 		if dt in can_read:
 			if txt_lower in dt.lower() or txt_lower in _(dt).lower():
 				results.append([dt])
diff --git a/frappe/public/js/frappe/form/controls/link.js b/frappe/public/js/frappe/form/controls/link.js
index 253c9377de..9bb1796272 100644
--- a/frappe/public/js/frappe/form/controls/link.js
+++ b/frappe/public/js/frappe/form/controls/link.js
@@ -441,7 +441,9 @@ frappe.ui.form.ControlLink = class ControlLink extends frappe.ui.form.ControlDat
 			if (newArr.length === 0) return [currElem];
 			let element_with_same_value = newArr.find((e) => e.value === currElem.value);
 			if (element_with_same_value) {
-				element_with_same_value.description += `, ${currElem.description}`;
+				if (currElem.description) {
+					element_with_same_value.description += `, ${currElem.description}`;
+				}
 				return [...newArr];
 			}
 			return [...newArr, currElem];