diff --git a/scripts/kconfig/expr.c b/scripts/kconfig/expr.c
index d83f232..8f18e37 100644
--- a/scripts/kconfig/expr.c
+++ b/scripts/kconfig/expr.c
@@ -1121,7 +1121,7 @@
 	}
 
 	str_append(gs, str);
-	if (sym)
+	if (sym && sym->type != S_UNKNOWN)
 		str_printf(gs, " [=%s]", sym_str);
 }