diff --git a/script/trees b/script/trees
index 1907dea..d1aa6fe 100755
--- a/script/trees
+++ b/script/trees
@@ -20,6 +20,7 @@ eval "`setvars "" xarch srcdir premake gnatdir xlang mode makeargs elfdir cmd \
 # ./mk -f will set this to "n", thus
 # disabling the use of make commands
 do_make="y"
+mode="all" # make all
 
 main()
 {