diff --git a/src/corelib/kernel/qjniarray.h b/src/corelib/kernel/qjniarray.h
index e3e9d0c4dc5..9da9fe2a42b 100644
--- a/src/corelib/kernel/qjniarray.h
+++ b/src/corelib/kernel/qjniarray.h
@@ -106,6 +106,7 @@ public:
     template <typename T = jobject>
     T object() const { return m_object.object<T>(); }
     bool isValid() const { return m_object.isValid(); }
+    bool isEmpty() const { return size() == 0; }
 
     size_type size() const
     {
@@ -310,6 +311,7 @@ public:
             return res;
         }
     }
+
     auto toContainer() const
     {
         JNIEnv *env = jniEnv();
@@ -328,11 +330,15 @@ public:
         } else if constexpr (std::is_same_v<T, jbyte>) {
             const qsizetype bytecount = size();
             QByteArray res(bytecount, Qt::Initialization::Uninitialized);
-            env->GetByteArrayRegion(object<jbyteArray>(),
-                                    0, bytecount, reinterpret_cast<jbyte *>(res.data()));
+            if (!isEmpty()) {
+                env->GetByteArrayRegion(object<jbyteArray>(),
+                                        0, bytecount, reinterpret_cast<jbyte *>(res.data()));
+            }
             return res;
         } else {
             QList<T> res;
+            if (isEmpty())
+                return res;
             res.resize(size());
             if constexpr (std::is_same_v<T, jchar>) {
                 env->GetCharArrayRegion(object<jcharArray>(),
diff --git a/tests/auto/corelib/kernel/qjniarray/tst_qjniarray.cpp b/tests/auto/corelib/kernel/qjniarray/tst_qjniarray.cpp
index 20dfcfd4d76..2f895b7b9ed 100644
--- a/tests/auto/corelib/kernel/qjniarray/tst_qjniarray.cpp
+++ b/tests/auto/corelib/kernel/qjniarray/tst_qjniarray.cpp
@@ -17,6 +17,7 @@ public:
 
 private slots:
     void construct();
+    void invalidArraysAreEmpty();
     void size();
     void operators();
 };
@@ -126,6 +127,30 @@ void tst_QJniArray::construct()
     }
 }
 
+void tst_QJniArray::invalidArraysAreEmpty()
+{
+    QJniArray<jchar> invalid;
+    QVERIFY(!invalid.isValid());
+    QCOMPARE(invalid.object(), nullptr);
+    QVERIFY(invalid.isEmpty());
+
+    QCOMPARE(invalid.begin(), invalid.end());
+    QCOMPARE(invalid.rbegin(), invalid.rend());
+
+    QList<jchar> data;
+    // safe to iterate
+    for (const auto &e : invalid)
+        data.emplace_back(e);
+    QVERIFY(data.empty());
+
+    // safe to convert
+    data = invalid.toContainer();
+    QVERIFY(data.empty());
+
+    // unsafe to access
+    // auto element = invalid.at(0);
+}
+
 void tst_QJniArray::size()
 {
     QJniArray<jint> array;