diff --git a/src/corelib/kernel/qmetatype.cpp b/src/corelib/kernel/qmetatype.cpp
index 71fcc6d407..8ee37212ee 100644
--- a/src/corelib/kernel/qmetatype.cpp
+++ b/src/corelib/kernel/qmetatype.cpp
@@ -487,15 +487,17 @@ bool QMetaType::isRegistered() const
 
     Returns id type hold by this QMetatype instance.
 */
-int QMetaType::id() const
+
+/*!
+    \internal
+    The slowpath of id(). Precondition: d_ptr != nullptr
+*/
+int QMetaType::idHelper() const
 {
-    if (d_ptr) {
-        if (int id = d_ptr->typeId.loadRelaxed())
-            return id;
-        auto reg = customTypeRegistry();
-        if (reg) {
-            return reg->registerCustomType(d_ptr);
-        }
+    Q_ASSERT(d_ptr);
+    auto reg = customTypeRegistry();
+    if (reg) {
+        return reg->registerCustomType(d_ptr);
     }
     return 0;
 }
diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h
index 3d282ba8c9..c1567a7990 100644
--- a/src/corelib/kernel/qmetatype.h
+++ b/src/corelib/kernel/qmetatype.h
@@ -443,7 +443,15 @@ public:
 
     bool isValid() const;
     bool isRegistered() const;
-    int id() const;
+    int id() const
+    {
+        if (d_ptr) {
+            if (int id = d_ptr->typeId.loadRelaxed())
+                return id;
+            return idHelper();
+        }
+        return 0;
+    };
     constexpr qsizetype sizeOf() const;
     constexpr qsizetype alignOf() const;
     constexpr TypeFlags flags() const;
@@ -486,10 +494,8 @@ public:
         if (!a.d_ptr || !b.d_ptr)
             return false; // one type is undefined, the other is defined
         // avoid id call if we already have the id
-        const int ai = a.d_ptr->typeId.loadRelaxed(); // avoid reading the atomic twice
-        const int aId = ai ? ai : a.id();
-        const int bi = b.d_ptr->typeId.loadRelaxed();
-        const int bId = bi ? bi : b.id();
+        const int aId = a.id();
+        const int bId = b.id();
         return aId == bId;
     }
     friend bool operator!=(QMetaType a, QMetaType b) { return !(a == b); }
@@ -709,6 +715,7 @@ public:
     const QtPrivate::QMetaTypeInterface *iface() { return d_ptr; }
 
 private:
+    int idHelper() const;
     friend class QVariant;
     const QtPrivate::QMetaTypeInterface *d_ptr = nullptr;
 };