diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index 2d5b00c0f..3c8161fc6 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -2279,7 +2279,8 @@ static int is_a_modelname(const char *s)
         st = st + 5;
     else if ((*st == 'f') || (*st == 'h'))
         st = st + 1;
-
+    else if (newcompat.lt && isdigit_c(*st)) /* 4k7 */
+        return FALSE;
     if (*st == '\0' || isspace_c(*st)) {
         return FALSE;
     }