diff --git a/scripts/prepare_release.sh b/scripts/prepare_release.sh
index 9013cc8..800383d 100755
--- a/scripts/prepare_release.sh
+++ b/scripts/prepare_release.sh
@@ -79,4 +79,4 @@
 else
     r='OFF'
 fi
-sed -i 's/^\( *option *( *GEN_FILES  *"[^"]*"  *\)\([A-Za-z0-9][A-Za-z0-9]*\)/\1'"$r/" CMakeLists.txt
+sed -i '/[Oo][Ff][Ff] in development/! s/^\( *option *( *GEN_FILES  *"[^"]*"  *\)\([A-Za-z0-9][A-Za-z0-9]*\)/\1'"$r/" CMakeLists.txt