diff --git a/usrc/subboards/subboard30_shake_module/subboard30_shake_module.cpp b/usrc/subboards/subboard30_shake_module/subboard30_shake_module.cpp
index d9d0eec..4c1a255 100644
--- a/usrc/subboards/subboard30_shake_module/subboard30_shake_module.cpp
+++ b/usrc/subboards/subboard30_shake_module/subboard30_shake_module.cpp
@@ -45,6 +45,7 @@ void Subboard30ShakeModule::initialize() {
   IO[1].initAsInput(PinNull, ZGPIO::kMode_nopull, ZGPIO::kIRQ_noIrq, true);
   IO[2].initAsInput(PinNull, ZGPIO::kMode_nopull, ZGPIO::kIRQ_noIrq, true);
   IO[3].initAsInput(PinNull, ZGPIO::kMode_nopull, ZGPIO::kIRQ_noIrq, true);
+  GService::inst()->getZCanProtocolParser()->registerModule(this);
 
 #if 1