diff --git a/src/catch2/internal/catch_unique_ptr.hpp b/src/catch2/internal/catch_unique_ptr.hpp
index 49cbc785..8add2a8d 100644
--- a/src/catch2/internal/catch_unique_ptr.hpp
+++ b/src/catch2/internal/catch_unique_ptr.hpp
@@ -92,7 +92,7 @@ namespace Detail {
         }
 
         explicit operator bool() const {
-            return m_ptr;
+            return m_ptr != nullptr;
         }
 
         friend void swap(unique_ptr& lhs, unique_ptr& rhs) {