diff --git a/AK/NonnullRefPtr.h b/AK/NonnullRefPtr.h
index 0cbb4ed8f9..75272f71c8 100644
--- a/AK/NonnullRefPtr.h
+++ b/AK/NonnullRefPtr.h
@@ -148,13 +148,13 @@ public:
         return *leakedPtr;
     }
 
-    CALLABLE_WHEN(unconsumed)
+    CALLABLE_WHEN("unconsumed","unknown")
     T* ptr()
     {
         ASSERT(m_ptr);
         return m_ptr;
     }
-    CALLABLE_WHEN(unconsumed)
+    CALLABLE_WHEN("unconsumed","unknown")
     const T* ptr() const
     {
         ASSERT(m_ptr);
diff --git a/AK/Platform.h b/AK/Platform.h
index 7764b93923..c75abaa69a 100644
--- a/AK/Platform.h
+++ b/AK/Platform.h
@@ -17,7 +17,11 @@
 #    define RETURN_TYPESTATE(state) __attribute__((return_typestate(state)))
 #else
 #    define CONSUMABLE(initial_state)
-#    define CALLABLE_WHEN(state)
+#    define CALLABLE_WHEN(...)
 #    define SET_TYPESTATE(state)
 #    define RETURN_TYPESTATE(state)
 #endif
+
+#ifndef __serenity__
+#define PAGE_SIZE sysconf(_SC_PAGESIZE)
+#endif