diff --git a/share/qtcreator/templates/wizards/files/form/file.ui b/share/qtcreator/templates/wizards/files/form/file.ui
index a12c1fffb0a..d83113033f1 100644
--- a/share/qtcreator/templates/wizards/files/form/file.ui
+++ b/share/qtcreator/templates/wizards/files/form/file.ui
@@ -1 +1 @@
-%{FormContents}\
+%{JS: [ %{FormContents} ].join('\n')}\
diff --git a/share/qtcreator/templates/wizards/files/form/wizard.json b/share/qtcreator/templates/wizards/files/form/wizard.json
index 510f2d0ae1c..835ccf8ffbb 100644
--- a/share/qtcreator/templates/wizards/files/form/wizard.json
+++ b/share/qtcreator/templates/wizards/files/form/wizard.json
@@ -10,7 +10,7 @@
     "featuresRequired": [ "Plugin.Designer" ],
 
     "options": [
-        { "key": "UiClass", "value": "%{JS: QtSupport.uiClassName('%{FormContents}') }" },
+        { "key": "UiClass", "value": "%{JS: QtSupport.uiClassName([ %{FormContents} ].join('\\n'))}" },
         { "key": "Extension", "value": "%{JS: Util.preferredSuffix('application/x-designer')}"},
         { "key": "InitialFileName", "value": "%{JS: Cpp.classToFileName('%{UiClass}', '%{Extension}') }" }
     ],
diff --git a/src/plugins/designer/formtemplatewizardpage.cpp b/src/plugins/designer/formtemplatewizardpage.cpp
index 6d5abd5d79b..f12c770ffa9 100644
--- a/src/plugins/designer/formtemplatewizardpage.cpp
+++ b/src/plugins/designer/formtemplatewizardpage.cpp
@@ -122,7 +122,7 @@ bool FormTemplateWizardPage::validatePage()
         QMessageBox::critical(this, tr("%1 - Error").arg(title()), errorMessage);
         return false;
     }
-    wizard()->setProperty("FormContents", m_templateContents.replace(QLatin1Char('\n'), QLatin1String("\\n")));
+    wizard()->setProperty("FormContents", m_templateContents.split(QLatin1Char('\n')));
     return true;
 }
 
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonwizard.cpp b/src/plugins/projectexplorer/jsonwizard/jsonwizard.cpp
index d5372b79238..ab9ba1a722e 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonwizard.cpp
+++ b/src/plugins/projectexplorer/jsonwizard/jsonwizard.cpp
@@ -124,10 +124,16 @@ QVariant JsonWizard::value(const QString &n) const
 {
     QVariant v = property(n.toUtf8());
     if (v.isValid()) {
-        if (v.type() == QVariant::String)
+        if (v.type() == QVariant::String) {
             return m_expander.expand(v.toString());
-        else
+        } if (v.type() == QVariant::StringList) {
+            QStringList tmp = Utils::transform(v.toStringList(), [this](const QString &i) -> QString {
+                return m_expander.expand(i).replace(QLatin1Char('\''), QLatin1String("\\'"));
+            });
+            return QString(QString(QLatin1Char('\'')) + tmp.join(QLatin1String("', '")) + QString(QLatin1Char('\'')));
+        } else {
             return v;
+        }
     }
     if (hasField(n))
         return field(n); // Can not contain macros!