diff --git a/erpnext/education/doctype/student_group/student_group.py b/erpnext/education/doctype/student_group/student_group.py
index 2925469312d..8b61c899bc0 100644
--- a/erpnext/education/doctype/student_group/student_group.py
+++ b/erpnext/education/doctype/student_group/student_group.py
@@ -26,8 +26,8 @@ class StudentGroup(Document):
 			frappe.throw(_("Please select Program"))
 
 	def validate_strength(self):
-		if self.max_strength <= 0:
-			frappe.throw(_("""Max strength must be greater than zero."""))
+		if cint(self.max_strength) < 0:
+			frappe.throw(_("""Max strength cannot be less than zero."""))
 		if self.max_strength and len(self.students) > self.max_strength:
 			frappe.throw(_("""Cannot enroll more than {0} students for this student group.""").format(self.max_strength))
 
diff --git a/erpnext/education/doctype/student_group/test_records.json b/erpnext/education/doctype/student_group/test_records.json
index c36c9b297c4..4c4e042b152 100644
--- a/erpnext/education/doctype/student_group/test_records.json
+++ b/erpnext/education/doctype/student_group/test_records.json
@@ -5,26 +5,30 @@
 		"program": "_TP1",
 		"batch": "_Batch 1",
 		"academic_year": "2014-2015",
-		"academic_term": "2014-2015 (_Test Academic Term)"
+		"academic_term": "2014-2015 (_Test Academic Term)",
+		"max_strength": 0
 	},
 	{
 		"student_group_name": "Course-TC101-2014-2015 (_Test Academic Term)",
 		"group_based_on": "Course",
 		"course": "TC101",
 		"academic_year": "2014-2015",
-		"academic_term": "2014-2015 (_Test Academic Term)"
+		"academic_term": "2014-2015 (_Test Academic Term)",
+		"max_strength": 0
 	},
 	{
 		"student_group_name": "Course-TC102-2014-2015 (_Test Academic Term)",
 		"group_based_on": "Course",
 		"course": "TC102",
 		"academic_year": "2014-2015",
-		"academic_term": "2014-2015 (_Test Academic Term)"
+		"academic_term": "2014-2015 (_Test Academic Term)",
+		"max_strength": 0
 	},
 	{
 		"student_group_name": "Activity-2014-2015 (_Test Academic Term)",
 		"group_based_on": "Activity",
 		"academic_year": "2014-2015",
-		"academic_term": "2014-2015 (_Test Academic Term)"
+		"academic_term": "2014-2015 (_Test Academic Term)",
+		"max_strength": 0
 	}
 ]
\ No newline at end of file