diff --git a/src/backends/native/meta-monitor-manager-kms.c b/src/backends/native/meta-monitor-manager-kms.c
index f708f0dd7..e1a6f5fc1 100644
--- a/src/backends/native/meta-monitor-manager-kms.c
+++ b/src/backends/native/meta-monitor-manager-kms.c
@@ -561,6 +561,8 @@ init_crtc_rotations (MetaMonitorManager *manager,
 
       drmModeFreePlane (drm_plane);
     }
+
+  drmModeFreePlaneResources (planes);
 }
 
 static void