diff --git a/frappe/core/doctype/doctype/doctype.py b/frappe/core/doctype/doctype/doctype.py
index e150e84a9e..6bffb42cd3 100644
--- a/frappe/core/doctype/doctype/doctype.py
+++ b/frappe/core/doctype/doctype/doctype.py
@@ -37,6 +37,15 @@ class DocType(Document):
 		for c in [".", "/", "#", "&", "=", ":", "'", '"']:
 			if c in self.name:
 				frappe.throw(_("{0} not allowed in name").format(c))
+				
+		if self.issingle:
+			self.allow_import = 0
+			self.is_submittable = 0
+			self.istable = 0
+			
+		elif self.istable:
+			self.allow_import = 0		
+				
 		self.validate_series()
 		self.scrub_field_names()
 		self.validate_document_type()
@@ -50,9 +59,6 @@ class DocType(Document):
 
 		self.make_amendable()
 
-		if self.istable:
-			self.allow_import = 0
-
 	def check_developer_mode(self):
 		"""Throw exception if not developer mode or via patch"""
 		if frappe.flags.in_patch:
@@ -298,6 +304,10 @@ def validate_fields(meta):
 			frappe.throw(_("Precision should be between 1 and 6"))
 
 	def check_unique_and_text(d):
+		if meta.issingle:
+			d.unique = 0
+			d.search_index = 0
+		
 		if getattr(d, "unique", False):
 			if d.fieldtype not in ("Data", "Link", "Read Only"):
 				frappe.throw(_("Fieldtype {0} for {1} cannot be unique").format(d.fieldtype, d.label))
diff --git a/frappe/public/js/frappe/form/control.js b/frappe/public/js/frappe/form/control.js
index 7c6e627f9d..5b5e93571f 100644
--- a/frappe/public/js/frappe/form/control.js
+++ b/frappe/public/js/frappe/form/control.js
@@ -672,7 +672,14 @@ frappe.ui.form.ControlCheck = frappe.ui.form.ControlData.extend({
 	set_input: function(value) {
 		this.input.checked = value ? 1 : 0;
 		this.last_value = value;
-	}
+	},
+	get_value: function() {
+		if (!this.$input) {
+			return;
+		}
+		
+		return this.$input.prop("checked") ? 1 : 0;
+	},
 });
 
 frappe.ui.form.ControlButton = frappe.ui.form.ControlData.extend({