diff --git a/wscript b/wscript
index 262cdd8b23..db52f181a7 100644
--- a/wscript
+++ b/wscript
@@ -541,6 +541,7 @@ def configure(cfg):
 
     cfg.recurse('libraries/AP_GPS')
     cfg.recurse('libraries/AP_HAL_SITL')
+    cfg.recurse('libraries/SITL')
 
     cfg.start_msg('Scripting runtime checks')
     if cfg.options.scripting_checks: