diff --git a/panda/src/pipeline/conditionVarSpinlockImpl.h b/panda/src/pipeline/conditionVarSpinlockImpl.h
index e3661e06ae..39bdececef 100644
--- a/panda/src/pipeline/conditionVarSpinlockImpl.h
+++ b/panda/src/pipeline/conditionVarSpinlockImpl.h
@@ -49,7 +49,7 @@ public:
 
 private:
   MutexSpinlockImpl &_mutex;
-  volatile PN_int32 _event;
+  TVOLATILE PN_int32 _event;
 };
 
 #include "conditionVarSpinlockImpl.I"