diff --git a/src/widgets/widgets/qcombobox.cpp b/src/widgets/widgets/qcombobox.cpp
index cc4c3416f0..17762eb39d 100644
--- a/src/widgets/widgets/qcombobox.cpp
+++ b/src/widgets/widgets/qcombobox.cpp
@@ -1764,6 +1764,7 @@ void QComboBox::setLineEdit(QLineEdit *edit)
     delete d->lineEdit;
 
     d->lineEdit = edit;
+    qt_widget_private(d->lineEdit)->inheritsInputMethodHints = 1;
     if (d->lineEdit->parent() != this)
         d->lineEdit->setParent(this);
     connect(d->lineEdit, SIGNAL(returnPressed()), this, SLOT(_q_returnPressed()));
diff --git a/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp b/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
index c409698ec0..7824172812 100644
--- a/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
+++ b/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
@@ -164,6 +164,7 @@ private slots:
     void keyboardSelection();
     void setCustomModelAndView();
     void updateDelegateOnEditableChange();
+    void task_QTBUG_39088_inputMethodHints();
 };
 
 class MyAbstractItemDelegate : public QAbstractItemDelegate
@@ -3169,5 +3170,13 @@ void tst_QComboBox::updateDelegateOnEditableChange()
     }
 }
 
+void tst_QComboBox::task_QTBUG_39088_inputMethodHints()
+{
+    QComboBox box;
+    box.setEditable(true);
+    box.setInputMethodHints(Qt::ImhNoPredictiveText);
+    QCOMPARE(box.lineEdit()->inputMethodHints(), Qt::ImhNoPredictiveText);
+}
+
 QTEST_MAIN(tst_QComboBox)
 #include "tst_qcombobox.moc"