diff --git a/lang/compile.py b/lang/compile.py
index c3f58b8..1eb27e1 100755
--- a/lang/compile.py
+++ b/lang/compile.py
@@ -422,9 +422,11 @@
 
 ## C file output
 
-def generate_header(source):
-	header = "/* Autogenerated by compile.py. Input source:"
+def generate_header(ir, source):
+	header = "/* Autogenerated by compile.py.\n\n"
 	header += source
+	header += "\n\n"
+	header += str(ir)
 	header += "*/\n\n"
 	includes = [
 		'"bytecode.h"',
@@ -488,7 +490,7 @@
 	return call
 
 def generate_c_file(ir, source):
-	output = generate_header(source)
+	output = generate_header(ir, source)
 	verbs = []
 	for node in ir:
 		next = None