diff --git a/glamor/glamor_largepixmap.c b/glamor/glamor_largepixmap.c
index d8aa2e6d4..def4e65d2 100644
--- a/glamor/glamor_largepixmap.c
+++ b/glamor/glamor_largepixmap.c
@@ -228,6 +228,7 @@ glamor_compute_clipped_regions_ext(PixmapPtr pixmap,
                                inner_block_h), sizeof(*result_regions));
     if (!result_regions) {
         *n_region = 0;
+        free(clipped_regions);
         return NULL;
     }