diff --git a/frappe/public/js/frappe/ui/group_by/group_by.js b/frappe/public/js/frappe/ui/group_by/group_by.js
index 1fd90ca4e3..349a7140d5 100644
--- a/frappe/public/js/frappe/ui/group_by/group_by.js
+++ b/frappe/public/js/frappe/ui/group_by/group_by.js
@@ -327,6 +327,9 @@ frappe.ui.GroupBy = class {
 			if (this.aggregate_function === "sum") {
 				docfield.label = __("Sum of {0}", [__(docfield.label, null, docfield.parent)]);
 			} else {
+				if (docfield.fieldtype == "Int") {
+					docfield.fieldtype = "Float"; // average of ints can be a float
+				}
 				docfield.label = __("Average of {0}", [__(docfield.label, null, docfield.parent)]);
 			}
 		}