diff --git a/blueprintcompiler/lsp.py b/blueprintcompiler/lsp.py
index 2281059..9ef6f57 100644
--- a/blueprintcompiler/lsp.py
+++ b/blueprintcompiler/lsp.py
@@ -291,7 +291,7 @@ class LanguageServer:
         xml = None
         try:
             output = XmlOutput()
-            xml = output.emit(open_file.ast)
+            xml = output.emit(open_file.ast, generated_notice=False)
         except:
             printerr(traceback.format_exc())
             self._send_error(id, ErrorCode.RequestFailed, "Could not compile document")
diff --git a/blueprintcompiler/outputs/xml/xml_emitter.py b/blueprintcompiler/outputs/xml/xml_emitter.py
index 44013da..ca87a49 100644
--- a/blueprintcompiler/outputs/xml/xml_emitter.py
+++ b/blueprintcompiler/outputs/xml/xml_emitter.py
@@ -25,9 +25,18 @@ from blueprintcompiler.language.types import ClassName
 
 
 class XmlEmitter:
-    def __init__(self, indent=2):
+    def __init__(self, indent=2, generated_notice=True):
         self.indent = indent
         self.result = '<?xml version="1.0" encoding="UTF-8"?>'
+        if generated_notice:
+            self.result += (
+                "\n"
+                "<!--\n"
+                "DO NOT EDIT!\n"
+                "This file was @generated by blueprint-compiler. Instead, edit the\n"
+                "corresponding .blp file and regenerate this file with blueprint-compiler.\n"
+                "-->"
+            )
         self._tag_stack = []
         self._needs_newline = False