diff --git a/src/mem/largealloc.h b/src/mem/largealloc.h
index 4745471..6c26ab7 100644
--- a/src/mem/largealloc.h
+++ b/src/mem/largealloc.h
@@ -2,6 +2,7 @@
 
 #include "../ds/flaglock.h"
 #include "../ds/mpmcstack.h"
+#include "../ds/helpers.h"
 #include "../pal/pal.h"
 #include "allocstats.h"
 #include "baseslab.h"
@@ -62,7 +63,7 @@ namespace snmalloc
     /**
      * Stack of large allocations that have been returned for reuse.
      */
-    MPMCStack<Largeslab, PreZeroed> large_stack[NUM_LARGE_CLASSES];
+    ModArray<NUM_LARGE_CLASSES, MPMCStack<Largeslab, PreZeroed>> large_stack;
 
     /**
      * Primitive allocator for structure that are required before