diff --git a/Tools/ardupilotwaf/px4.py b/Tools/ardupilotwaf/px4.py
index 4678272413..4c0438247c 100644
--- a/Tools/ardupilotwaf/px4.py
+++ b/Tools/ardupilotwaf/px4.py
@@ -5,7 +5,7 @@
 Waf tool for PX4 build
 """
 
-from waflib import Logs, Task, Utils
+from waflib import Errors, Logs, Task, Utils
 from waflib.TaskGen import after_method, before_method, feature
 
 import os