--- a/scons.py
+++ b/scons.py
@@ -56,6 +56,7 @@ if script_path in sys.path:
     sys.path.remove(script_path)
 
 libs = []
+libs = [os.path.join(os.path.dirname(script_dir), 'lib', 'scons')]
 
 if "SCONS_LIB_DIR" in os.environ:
     libs.append(os.environ["SCONS_LIB_DIR"])