diff --git a/Kernel/Heap/SlabAllocator.cpp b/Kernel/Heap/SlabAllocator.cpp
index 9a74e8c17c..179cdcc0b8 100644
--- a/Kernel/Heap/SlabAllocator.cpp
+++ b/Kernel/Heap/SlabAllocator.cpp
@@ -97,8 +97,8 @@ private:
     };
 
     Atomic<FreeSlab*> m_freelist { nullptr };
-    Atomic<size_t, AK::MemoryOrder::memory_order_relaxed> m_num_allocated;
-    size_t m_slab_count;
+    Atomic<size_t, AK::MemoryOrder::memory_order_relaxed> m_num_allocated { 0 };
+    size_t m_slab_count { 0 };
     void* m_base { nullptr };
     void* m_end { nullptr };