--- a/genconfig.sh
+++ b/genconfig.sh
@@ -467,7 +467,7 @@ echo "/* Uncomment the following line to
 if [ -n "$PORTINUSE" ]; then
 	echo "#define CHECK_PORTINUSE" >> ${CONFIGFILE}
 else
-	echo "/*#define CHECK_PORTINUSE*/" >> ${CONFIGFILE}
+	echo "#define CHECK_PORTINUSE" >> ${CONFIGFILE}
 fi
 echo "" >> ${CONFIGFILE}