diff --git a/frappe/desk/reportview.py b/frappe/desk/reportview.py
index e5c87d9603..69bc94f383 100644
--- a/frappe/desk/reportview.py
+++ b/frappe/desk/reportview.py
@@ -108,6 +108,9 @@ def is_standard(fieldname):
 	return fieldname in default_fields or fieldname in optional_fields
 
 def extract_fieldname(field):
+	if ',' in field:
+		raise_invalid_field(field)
+
 	fieldname = field.split(" as ")[0]
 
 	# certain functions allowed, extract the fieldname from the function