diff --git a/examples/vulkan/hellovulkancubes/renderer.cpp b/examples/vulkan/hellovulkancubes/renderer.cpp
index 96ae6020a7f..3b837d85d45 100644
--- a/examples/vulkan/hellovulkancubes/renderer.cpp
+++ b/examples/vulkan/hellovulkancubes/renderer.cpp
@@ -97,7 +97,7 @@ Renderer::Renderer(VulkanWindow *w, int initialCount)
 
 void Renderer::preInitResources()
 {
-    QSet<int> sampleCounts = m_window->supportedSampleCounts();
+    const QVector<int> sampleCounts = m_window->supportedSampleCounts();
     if (DBG)
         qDebug() << "Supported sample counts:" << sampleCounts;
     if (sampleCounts.contains(4)) {
diff --git a/examples/vulkan/hellovulkanwidget/hellovulkanwidget.cpp b/examples/vulkan/hellovulkanwidget/hellovulkanwidget.cpp
index 78de338f1f9..81daa9bb96e 100644
--- a/examples/vulkan/hellovulkanwidget/hellovulkanwidget.cpp
+++ b/examples/vulkan/hellovulkanwidget/hellovulkanwidget.cpp
@@ -170,8 +170,7 @@ void VulkanRenderer::initResources()
                               m_window->colorFormat(), m_window->depthStencilFormat());
 
     info += QStringLiteral("Supported sample counts:");
-    QList<int> sampleCounts = m_window->supportedSampleCounts().toList();
-    std::sort(sampleCounts.begin(), sampleCounts.end());
+    const QVector<int> sampleCounts = m_window->supportedSampleCounts();
     for (int count : sampleCounts)
         info += QLatin1Char(' ') + QString::number(count);
     info += QLatin1Char('\n');
diff --git a/examples/vulkan/shared/trianglerenderer.cpp b/examples/vulkan/shared/trianglerenderer.cpp
index a0800080a06..7327c5a7062 100644
--- a/examples/vulkan/shared/trianglerenderer.cpp
+++ b/examples/vulkan/shared/trianglerenderer.cpp
@@ -73,7 +73,7 @@ TriangleRenderer::TriangleRenderer(QVulkanWindow *w, bool msaa)
     : m_window(w)
 {
     if (msaa) {
-        QSet<int> counts = w->supportedSampleCounts();
+        const QVector<int> counts = w->supportedSampleCounts();
         qDebug() << "Supported sample counts:" << counts;
         for (int s = 16; s >= 4; s /= 2) {
             if (counts.contains(s)) {
diff --git a/src/gui/vulkan/qvulkanwindow.cpp b/src/gui/vulkan/qvulkanwindow.cpp
index 82c157147c1..a9f5bb41df4 100644
--- a/src/gui/vulkan/qvulkanwindow.cpp
+++ b/src/gui/vulkan/qvulkanwindow.cpp
@@ -512,6 +512,7 @@ static struct {
     VkSampleCountFlagBits mask;
     int count;
 } qvk_sampleCounts[] = {
+    // keep this sorted by 'count'
     { VK_SAMPLE_COUNT_1_BIT, 1 },
     { VK_SAMPLE_COUNT_2_BIT, 2 },
     { VK_SAMPLE_COUNT_4_BIT, 4 },
@@ -523,7 +524,7 @@ static struct {
 
 /*!
     Returns the set of supported sample counts when using the physical device
-    selected by setPhysicalDeviceIndex().
+    selected by setPhysicalDeviceIndex(), as a sorted vector.
 
     By default QVulkanWindow uses a sample count of 1. By calling setSampleCount()
     with a different value (2, 4, 8, ...) from the set returned by this
@@ -533,10 +534,10 @@ static struct {
 
     \sa setSampleCount()
  */
-QSet<int> QVulkanWindow::supportedSampleCounts()
+QVector<int> QVulkanWindow::supportedSampleCounts()
 {
     Q_D(const QVulkanWindow);
-    QSet<int> result;
+    QVector<int> result;
 
     availablePhysicalDevices();
 
@@ -555,7 +556,7 @@ QSet<int> QVulkanWindow::supportedSampleCounts()
                 && (depth & qvk_sampleCounts[i].mask)
                 && (stencil & qvk_sampleCounts[i].mask))
         {
-            result.insert(qvk_sampleCounts[i].count);
+            result.append(qvk_sampleCounts[i].count);
         }
     }
 
diff --git a/src/gui/vulkan/qvulkanwindow.h b/src/gui/vulkan/qvulkanwindow.h
index c32c40d459f..bbeba156039 100644
--- a/src/gui/vulkan/qvulkanwindow.h
+++ b/src/gui/vulkan/qvulkanwindow.h
@@ -96,7 +96,7 @@ public:
 
     void setPreferredColorFormats(const QVector<VkFormat> &formats);
 
-    QSet<int> supportedSampleCounts();
+    QVector<int> supportedSampleCounts();
     void setSampleCount(int sampleCount);
 
     bool isValid() const;