diff --git a/base_cpp/include/embb/base/atomic.h b/base_cpp/include/embb/base/atomic.h
index 990b2e0..d39f494 100644
--- a/base_cpp/include/embb/base/atomic.h
+++ b/base_cpp/include/embb/base/atomic.h
@@ -478,7 +478,7 @@ class Atomic<BaseType*> : public embb::base::internal::atomic::
  public:
   Atomic() : embb::base::internal::atomic::
     AtomicPointer<BaseType, ptrdiff_t, sizeof(BaseType*)>() {}
-  Atomic(BaseType* p) : embb::base::internal::atomic::
+  explicit Atomic(BaseType* p) : embb::base::internal::atomic::
     AtomicPointer<BaseType, ptrdiff_t, sizeof(BaseType*)>(p) {}
 
   BaseType* operator=(BaseType* p) {