diff --git a/utils/genheader.sh b/utils/genheader.sh
index 2bb93edd..6e766ff2 100644
--- a/utils/genheader.sh
+++ b/utils/genheader.sh
@@ -7,6 +7,8 @@ fi
 
 set -ex
 
+export FUZDIR=$PWD
+
 # for some reason on sourced script set -e doesn't work
 # Scripts may have additional arguments, but first is reserved for build directory
 test $# -ge 1 || exit 1