diff --git a/Tools/ardupilotwaf/boards.py b/Tools/ardupilotwaf/boards.py
index c07c2b3fcf..a6ae3015ad 100644
--- a/Tools/ardupilotwaf/boards.py
+++ b/Tools/ardupilotwaf/boards.py
@@ -423,7 +423,7 @@ class linux(Board):
         cfg.check_libiio(env)
 
         env.LINKFLAGS += ['-pthread',]
-        env.AP_LIBRARIES = [
+        env.AP_LIBRARIES += [
             'AP_HAL_Linux',
         ]