diff --git a/src/core/tools/qlinkedlist.h b/src/core/tools/qlinkedlist.h
index e41c2baf3..be6092cf9 100644
--- a/src/core/tools/qlinkedlist.h
+++ b/src/core/tools/qlinkedlist.h
@@ -230,8 +230,6 @@ private:
 template <typename T>
 inline QLinkedList<T>::~QLinkedList()
 {
-    if (!d)
-        return;
     if (!d->ref.deref())
         freeData(d);
 }
diff --git a/src/core/tools/qmap.h b/src/core/tools/qmap.h
index 53ecddfa7..ae49d993e 100644
--- a/src/core/tools/qmap.h
+++ b/src/core/tools/qmap.h
@@ -159,7 +159,7 @@ public:
     inline QMap() : d(&QMapData::shared_null) { d->ref.ref(); }
     inline QMap(const QMap<Key, T> &other) : d(other.d)
     { d->ref.ref(); if (!d->sharable) detach(); }
-    inline ~QMap() { if (!d) return; if (!d->ref.deref()) freeData(d); }
+    inline ~QMap() { if (!d->ref.deref()) freeData(d); }
 
     QMap<Key, T> &operator=(const QMap<Key, T> &other);
 #ifdef Q_COMPILER_RVALUE_REFS
diff --git a/src/core/tools/qvector.h b/src/core/tools/qvector.h
index aeec40089..2f9c5b5b6 100644
--- a/src/core/tools/qvector.h
+++ b/src/core/tools/qvector.h
@@ -84,7 +84,7 @@ public:
     explicit QVector(int size);
     QVector(int size, const T &t);
     inline QVector(const QVector<T> &v) : d(v.d) { d->ref.ref(); if (!d->sharable) detach_helper(); }
-    inline ~QVector() { if (!d) return; if (!d->ref.deref()) free(p); }
+    inline ~QVector() { if (!d->ref.deref()) free(p); }
     QVector<T> &operator=(const QVector<T> &v);
 #ifdef Q_COMPILER_RVALUE_REFS
     inline QVector<T> operator=(QVector<T> &&other)