diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index d4f7c600755..e013de49b04 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -682,6 +682,7 @@ intel_update_winsys_renderbuffer_miptree(struct brw_context *intel,
    int num_samples = rb->NumSamples;
 
    intel_miptree_release(&irb->mt);
+   intel_miptree_release(&irb->singlesample_mt);
 
    /* Only the front and back buffers, which are color buffers, are allocated
     * through the image loader.