diff --git a/apps/plugins/lib/gray.c b/apps/plugins/lib/gray.c
index a18f3f7644..cf7063aeeb 100644
--- a/apps/plugins/lib/gray.c
+++ b/apps/plugins/lib/gray.c
@@ -469,7 +469,7 @@ int gray_init_buffer(unsigned char *gbuf, int gbuf_size, int width,
     graybuf->depth = depth;
     graybuf->cur_plane = 0;
     graybuf->flags = 0;
-    graybuf->bitpattern = (unsigned long *) gbuf + sizeof(tGraybuf);
+    graybuf->bitpattern = (unsigned long *) (gbuf + sizeof(tGraybuf));
     graybuf->data = (unsigned char *) (graybuf->bitpattern + depth + 1);
     graybuf->curfont = FONT_SYSFIXED;