diff --git a/backends/kwayland/waylandoutput.cpp b/backends/kwayland/waylandoutput.cpp
--- a/backends/kwayland/waylandoutput.cpp
+++ b/backends/kwayland/waylandoutput.cpp
@@ -153,7 +153,7 @@
     output->setCurrentModeId(currentModeId);
     output->setPreferredModes(preferredModeIds);
     output->setModes(modeList);
-    output->setScale(m_device->scale());
+    output->setScale(m_device->scaleF());
     output->setType(Utils::guessOutputType(m_device->model(), m_device->model()));
 }