diff --git a/Slang/slang.js b/Slang/slang.js
index a3dfddb..5ea2e4d 100755
--- a/Slang/slang.js
+++ b/Slang/slang.js
@@ -665,8 +665,8 @@ var BOOTSTRAP = [
 ':: . ( x -- ) [ drop ]',
 ':: .. ( x -- ) [ print drop ]',
 '',
-':: isT ( a -- b ) [ not not true eq ]',
-':: isF ( a -- b ) [ not isT ]',
+':: true? ( a -- b ) [ not not true eq ]',
+':: false? ( a -- b ) [ not true? ]',
 '',
 '-- we already have gt and eq, now let\'s define the rest...',
 ':: ne ( a b -- c ) [ eq not ]',
@@ -706,7 +706,7 @@ var BOOTSTRAP = [
 '--   [ cond ] [ A ] [ B ] if',
 '--',
 '-- A bit too "polish" in my view ;)',
-':: if ( cond a b -- ... ) [ rot rot exec isT tor and tor or exec ]',
+':: if ( cond a b -- ... ) [ rot rot exec true? tor and tor or exec ]',
 '',
 '-- Ternary operator, this can take two forms:',
 '--   COND ? A',