diff --git a/release.howto b/release.howto
index 0148b239..1871162e 100644
--- a/release.howto
+++ b/release.howto
@@ -1,6 +1,7 @@
 1. check files, build on windows,mac,linux with cmake and qmake
 2. check files with release numbers:
    Docu/history.docu
+   System/config.h
    CHANGELOG
    README
    VERSION