diff --git a/src/snmalloc/pal/pal_ds.h b/src/snmalloc/pal/pal_ds.h
index 59976b881..1c087110f 100644
--- a/src/snmalloc/pal/pal_ds.h
+++ b/src/snmalloc/pal/pal_ds.h
@@ -103,7 +103,7 @@ namespace snmalloc
     template<typename T>
     friend class PalList;
 
-    stl::Atomic<PalTimerObject*> pal_next;
+    stl::Atomic<PalTimerObject*> pal_next{nullptr};
 
     void (*pal_notify)(PalTimerObject* self);