diff --git a/frappe/desk/query_report.py b/frappe/desk/query_report.py
index 9d6f3561cb..5d1829abb2 100644
--- a/frappe/desk/query_report.py
+++ b/frappe/desk/query_report.py
@@ -562,7 +562,7 @@ def get_linked_doctypes(columns, data):
 	for idx, col in enumerate(columns):
 		df = columns_dict[idx]
 		if df.get("fieldtype")=="Link":
-			if isinstance(col, string_types):
+			if data and isinstance(data[0], (list, tuple)):
 				linked_doctypes[df["options"]] = idx
 			else:
 				# dict