diff --git a/src/plugins/qmldesigner/components/componentcore/propertycomponentgenerator.cpp b/src/plugins/qmldesigner/components/componentcore/propertycomponentgenerator.cpp
index 1b9e7c409e2..9c349f3dec6 100644
--- a/src/plugins/qmldesigner/components/componentcore/propertycomponentgenerator.cpp
+++ b/src/plugins/qmldesigner/components/componentcore/propertycomponentgenerator.cpp
@@ -128,7 +128,7 @@ QString PropertyComponentGenerator::generateComplexComponentText(Utils::SmallStr
     static QString templateText = QStringLiteral(
         R"xy(
            Section {
-             caption: %1 - %2
+             caption: "%1 - %2"
              anchors.left: parent.left
              anchors.right: parent.right
              leftPadding: 8
diff --git a/tests/unit/tests/unittests/componentcore/propertycomponentgenerator-test.cpp b/tests/unit/tests/unittests/componentcore/propertycomponentgenerator-test.cpp
index 2a5f5cd87e3..facce0fa5e9 100644
--- a/tests/unit/tests/unittests/componentcore/propertycomponentgenerator-test.cpp
+++ b/tests/unit/tests/unittests/componentcore/propertycomponentgenerator-test.cpp
@@ -223,7 +223,7 @@ TEST_F(PropertyComponentGenerator,
     QString expectedText = QStringLiteral(
         R"xy(
            Section {
-             caption: foo - Foo
+             caption: "foo - Foo"
              anchors.left: parent.left
              anchors.right: parent.right
              leftPadding: 8
@@ -256,7 +256,7 @@ TEST_F(PropertyComponentGenerator,
     QString expectedText = QStringLiteral(
         R"xy(
            Section {
-             caption: foo - Foo
+             caption: "foo - Foo"
              anchors.left: parent.left
              anchors.right: parent.right
              leftPadding: 8