diff --git a/libc/kernel/tools/clean_header.py b/libc/kernel/tools/clean_header.py
index 0549fc2..22e62aa 100755
--- a/libc/kernel/tools/clean_header.py
+++ b/libc/kernel/tools/clean_header.py
@@ -37,7 +37,7 @@
         src_path = src_path[1:]
 
     if len(src_path) == 0:
-        panic( "oops, internal error, can't extract correct relative path" )
+        panic( "oops, internal error, can't extract correct relative path\n" )
 
     # convert into destination path, extracting architecture if needed
     # and the corresponding list of known static functions