diff --git a/frappe/printing/doctype/letter_head/letter_head.py b/frappe/printing/doctype/letter_head/letter_head.py
index c2c193a1a8..a4daf3c7c6 100644
--- a/frappe/printing/doctype/letter_head/letter_head.py
+++ b/frappe/printing/doctype/letter_head/letter_head.py
@@ -40,6 +40,13 @@ class LetterHead(Document):
 		if not frappe.flags.in_migrate and not frappe.flags.in_install:
 			self.source = "Image"
 
+	def on_trash(self):
+		from frappe.defaults import clear_default
+
+		clear_default("letter_head", self.name)
+		clear_default("default_letter_head_content", self.content)
+		frappe.clear_cache()
+
 	def validate(self):
 		self.set_image()
 		self.validate_disabled_and_default()