diff --git a/src/lex_config.l b/src/lex_config.l
index 746edc1..7b4d627 100644
--- a/src/lex_config.l
+++ b/src/lex_config.l
@@ -1,5 +1,6 @@
 /* Special state for handling include files */
 %x src
+%option noinput nounput
 
 %{
 /*