diff --git a/conf/autopilot/whirly_ap.makefile b/conf/autopilot/whirly_ap.makefile
index 7c0bf21d7d..062339506f 100644
--- a/conf/autopilot/whirly_ap.makefile
+++ b/conf/autopilot/whirly_ap.makefile
@@ -5,7 +5,7 @@ SRC_RDY=readyboard
 SRC_FMS=fms
 SRC_BOOZ=booz
 
-PERIODIC_FREQ = 120
+PERIODIC_FREQ = 512
 
 ap.ARCHDIR = $(ARCHI)