diff --git a/src/lib/in.c b/src/lib/in.c
index 244009cf4..319592a27 100644
--- a/src/lib/in.c
+++ b/src/lib/in.c
@@ -1493,9 +1493,11 @@ build_cflow_automaton(inputctx* ictx){
     { "[\\N;\\NR", cursor_location_cb, },
     { "[?1;1S", NULL, }, // negative cregs XTSMGRAPHICS
     { "[?1;2S", NULL, }, // negative cregs XTSMGRAPHICS
+    { "[?1;3S", NULL, }, // negative cregs XTSMGRAPHICS
     { "[?1;3;0S", NULL, }, // negative cregs XTSMGRAPHICS
     { "[?2;1S", NULL, }, // negative pixels XTSMGRAPHICS
     { "[?2;2S", NULL, }, // negative pixels XTSMGRAPHICS
+    { "[?2;3S", NULL, }, // negative pixels XTSMGRAPHICS
     { "[?2;3;0S", NULL, }, // negative pixels XTSMGRAPHICS
     { "[?6c", da1_vt102_cb, },   // CSI ? 6 c ("VT102")
     { "[?7c", da1_cb, },   // CSI ? 7 c ("VT131")