diff --git a/drmdisplaycomposition.cpp b/drmdisplaycomposition.cpp
index 293160b..0f8084b 100644
--- a/drmdisplaycomposition.cpp
+++ b/drmdisplaycomposition.cpp
@@ -379,6 +379,9 @@
     if (!i.plane())
       continue;
 
+    // make sure that source layers are ordered based on zorder
+    std::sort(i.source_layers().begin(), i.source_layers().end());
+
     std::vector<DrmPlane *> *container;
     if (i.plane()->type() == DRM_PLANE_TYPE_PRIMARY)
       container = primary_planes;