diff --git a/AK/OwnPtr.h b/AK/OwnPtr.h
index 67a19578db..9e40625a71 100644
--- a/AK/OwnPtr.h
+++ b/AK/OwnPtr.h
@@ -123,11 +123,29 @@ public:
     T* ptr() { return m_ptr; }
     const T* ptr() const { return m_ptr; }
 
-    T* operator->() { return m_ptr; }
-    const T* operator->() const { return m_ptr; }
+    T* operator->()
+    {
+        ASSERT(m_ptr);
+        return m_ptr;
+    }
 
-    T& operator*() { return *m_ptr; }
-    const T& operator*() const { return *m_ptr; }
+    const T* operator->() const
+    {
+        ASSERT(m_ptr);
+        return m_ptr;
+    }
+
+    T& operator*()
+    {
+        ASSERT(m_ptr);
+        return *m_ptr;
+    }
+
+    const T& operator*() const
+    {
+        ASSERT(m_ptr);
+        return *m_ptr;
+    }
 
     operator const T*() const { return m_ptr; }
     operator T*() { return m_ptr; }