fix #1343

diff --git a/tclpkg/tcldot/tcldot.c b/tclpkg/tcldot/tcldot.c
index 9aee71b144bc80e5ba9ad951699dc200c7e36a10..562ef4897c3d0328a74f64a7c6fcbd744c3ffe44 100644 (file)
--- a/tclpkg/tcldot/tcldot.c
+++ b/tclpkg/tcldot/tcldot.c
@@ -574,7 +574,7 @@ static void tcldot_layout(GVC_t *gvc, Agraph_t * g, char *engine)
            rc = gvlayout_select(gvc, "neato");
        }
        else {
-           rc = gvlayout_select(gvc, engine);
+           rc = gvlayout_select(gvc, tolower(engine));
        }
        if (rc == NO_SUPPORT)
            rc = gvlayout_select(gvc, "dot");