diff --git a/programming/build/ninja/actions.py b/programming/build/ninja/actions.py
index 646f61dc3f..2902da0bba 100644
--- a/programming/build/ninja/actions.py
+++ b/programming/build/ninja/actions.py
@@ -13,6 +13,7 @@ from pisi.actionsapi import get
 def build():
     shelltools.system("python bootstrap.py")
     shelltools.system("asciidoc doc/manual.asciidoc")
+    shelltools.system("emacs -Q --batch -f batch-byte-compile misc/ninja-mode.el")
 
 def check():
     #needs new package gtest -> ignore it for now
@@ -27,4 +28,4 @@ def install():
 
     pisitools.dodoc("HACKING.md", "COPYING", "RELEASING", "README", "doc/manual.asciidoc")
 
-    pisitools.dohtml("doc/manual.html")
\ No newline at end of file
+    pisitools.dohtml("doc/manual.html")