diff --git a/core/form.h b/core/form.h
--- a/core/form.h
+++ b/core/form.h
@@ -87,6 +87,11 @@
         virtual bool isReadOnly() const;
 
         /**
+         * Whether the field is read-only.
+         */
+        virtual void setReadOnly( bool value );
+
+        /**
          * Whether this form field is visible.
          */
         virtual bool isVisible() const;
diff --git a/core/form.cpp b/core/form.cpp
--- a/core/form.cpp
+++ b/core/form.cpp
@@ -55,6 +55,10 @@
     return false;
 }
 
+void FormField::setReadOnly( bool )
+{
+}
+
 bool FormField::isVisible() const
 {
     return true;
diff --git a/core/script/kjs_field.cpp b/core/script/kjs_field.cpp
--- a/core/script/kjs_field.cpp
+++ b/core/script/kjs_field.cpp
@@ -31,6 +31,23 @@
 typedef QHash< FormField *, Page * > FormCache;
 Q_GLOBAL_STATIC( FormCache, g_fieldCache )
 
+
+// Helper for modified fields
+static void updateField( FormField *field )
+{
+    Page *page = g_fieldCache->value( field );
+    if (page)
+    {
+        Document *doc = PagePrivate::get( page )->m_doc->m_parent;
+        QMetaObject::invokeMethod( doc, "refreshPixmaps", Qt::QueuedConnection, Q_ARG( int, page->number() ) );
+        emit doc->refreshFormWidget( field );
+    }
+    else
+    {
+        qWarning() << "Could not get page of field" << field;
+    }
+}
+
 // Field.doc
 static KJSObject fieldGetDoc( KJSContext *context, void *  )
 {
@@ -54,16 +71,11 @@
 // Field.readonly (setter)
 static void fieldSetReadOnly( KJSContext *context, void *object, KJSObject value )
 {
-#if 0
     FormField *field = reinterpret_cast< FormField * >( object );
     bool b = value.toBoolean( context );
     field->setReadOnly( b );
-#else
-    Q_UNUSED( context );
-    Q_UNUSED( object );
-    Q_UNUSED( value );
-    qCDebug(OkularCoreDebug) << "Not implemented: setting readonly property";
-#endif
+
+    updateField( field );
 }
 
 static QString fieldGetTypeHelper( const FormField *field )
@@ -165,18 +177,7 @@
             if ( text != textField->text() )
             {
                 textField->setText( text );
-
-                Page *page = g_fieldCache->value( field );
-                if (page)
-                {
-                    Document *doc = PagePrivate::get( page )->m_doc->m_parent;
-                    QMetaObject::invokeMethod( doc, "refreshPixmaps", Qt::QueuedConnection, Q_ARG( int, page->number() ) );
-                    emit doc->refreshFormWidget( field );
-                }
-                else
-                {
-                    qWarning() << "Could not get page of field" << field;
-                }
+                updateField( field );
             }
             break;
         }
diff --git a/generators/poppler/formfields.h b/generators/poppler/formfields.h
--- a/generators/poppler/formfields.h
+++ b/generators/poppler/formfields.h
@@ -25,6 +25,7 @@
         QString name() const override;
         QString uiName() const override;
         bool isReadOnly() const override;
+        void setReadOnly( bool value ) override;
         bool isVisible() const override;
 
         // inherited from Okular::FormFieldButton
@@ -53,6 +54,7 @@
         QString name() const override;
         QString uiName() const override;
         bool isReadOnly() const override;
+        void setReadOnly( bool value ) override;
         bool isVisible() const override;
 
         // inherited from Okular::FormFieldText
@@ -84,6 +86,7 @@
         QString name() const override;
         QString uiName() const override;
         bool isReadOnly() const override;
+        void setReadOnly( bool value ) override;
         bool isVisible() const override;
 
         // inherited from Okular::FormFieldChoice
diff --git a/generators/poppler/formfields.cpp b/generators/poppler/formfields.cpp
--- a/generators/poppler/formfields.cpp
+++ b/generators/poppler/formfields.cpp
@@ -67,6 +67,15 @@
     return m_field->isReadOnly();
 }
 
+void PopplerFormFieldButton::setReadOnly( bool value )
+{
+#ifdef HAVE_POPPLER_0_63
+    m_field->setReadOnly( value );
+#else
+    Q_UNUSED( value );
+#endif
+}
+
 bool PopplerFormFieldButton::isVisible() const
 {
     return m_field->isVisible();
@@ -145,6 +154,15 @@
     return m_field->isReadOnly();
 }
 
+void PopplerFormFieldText::setReadOnly( bool value )
+{
+#ifdef HAVE_POPPLER_0_63
+    m_field->setReadOnly( value );
+#else
+    Q_UNUSED( value );
+#endif
+}
+
 bool PopplerFormFieldText::isVisible() const
 {
     return m_field->isVisible();
@@ -238,6 +256,15 @@
     return m_field->isReadOnly();
 }
 
+void PopplerFormFieldChoice::setReadOnly( bool value )
+{
+#ifdef HAVE_POPPLER_0_63
+    m_field->setReadOnly( value );
+#else
+    Q_UNUSED( value );
+#endif
+}
+
 bool PopplerFormFieldChoice::isVisible() const
 {
     return m_field->isVisible();