diff --git a/patches/december_2012/production_cleanup.py b/patches/december_2012/production_cleanup.py
index 55881f2..0c25b89 100644
--- a/patches/december_2012/production_cleanup.py
+++ b/patches/december_2012/production_cleanup.py
@@ -15,15 +15,18 @@
 	webnotes.reload_doc("core", "doctype", "page")
 	webnotes.reload_doc("core", "doctype", "module_def")
 
-	webnotes.rename_doc("Role", "Production User", "Manufacturing User")
-	webnotes.rename_doc("Role", "Production Manager", "Manufacturing Manager")
+	if webnotes.conn.exists("Role", "Production User"):
+		webnotes.rename_doc("Role", "Production User", "Manufacturing User")
+	if webnotes.conn.exists("Role", "Production Manager"):
+		webnotes.rename_doc("Role", "Production Manager", "Manufacturing Manager")
 
 	if webnotes.conn.exists("Page", "manufacturing-home"):
 		webnotes.delete_doc("Page", "production-home")
 	else:
 		webnotes.rename_doc("Page", "production-home", "manufacturing-home")
 
-	webnotes.rename_doc("Module Def", "Production", "Manufacturing")
+	if webnotes.conn.exists("Module Def", "Production"):
+		webnotes.rename_doc("Module Def", "Production", "Manufacturing")
 	
 	webnotes.conn.set_global("modules_list",
 		webnotes.conn.get_global('modules_list').replace("Production", "Manufacturing"))