diff --git a/src/backends/drm/drm_gpu.h b/src/backends/drm/drm_gpu.h
index 25cbf105a9..566e3fa947 100644
--- a/src/backends/drm/drm_gpu.h
+++ b/src/backends/drm/drm_gpu.h
@@ -130,7 +130,7 @@ private:
     bool m_addFB2ModifiersSupported = false;
     bool m_isNVidia;
     bool m_isVirtualMachine;
-    bool m_asyncPageflipSupported;
+    bool m_asyncPageflipSupported = false;
     bool m_isRemoved = false;
     clockid_t m_presentationClock;
     gbm_device *m_gbmDevice;