diff --git a/libc/kernel/tools/clean_header.py b/libc/kernel/tools/clean_header.py
index 28cb05e..dad9120 100755
--- a/libc/kernel/tools/clean_header.py
+++ b/libc/kernel/tools/clean_header.py
@@ -71,6 +71,7 @@
     list.removeEmptyLines()
     list.removeMacroDefines( kernel_ignored_macros )
     list.insertDisclaimer( kernel.kernel_disclaimer )
+    list.replaceTokens( kernel_token_replacements )
 
     out = StringOutput()
     list.write(out)