diff --git a/gio/gdbus-codegen/codegen.py b/gio/gdbus-codegen/codegen.py
index 3e3efef1f..34bd33e72 100644
--- a/gio/gdbus-codegen/codegen.py
+++ b/gio/gdbus-codegen/codegen.py
@@ -52,6 +52,8 @@ class CodeGenerator:
     def generate_intro(self):
         self.c.write('/*\n'
                      ' * Generated by gdbus-codegen %s. DO NOT EDIT.\n'
+                     ' *\n'
+                     ' * The license of this code is the same as for the source it was derived from.\n'
                      ' */\n'
                      '\n'
                      %(config.VERSION))
@@ -191,6 +193,8 @@ class CodeGenerator:
 
         self.h.write('/*\n'
                      ' * Generated by gdbus-codegen %s. DO NOT EDIT.\n'
+                     ' *\n'
+                     ' * The license of this code is the same as for the source it was derived from.\n'
                      ' */\n'
                      '\n'
                      '#ifndef __%s__\n'