diff -urNp -x '*.orig' ntop-5.0.1.org/Makefile.am ntop-5.0.1/Makefile.am
--- ntop-5.0.1.org/Makefile.am	2021-10-05 21:40:21.302499543 +0200
+++ ntop-5.0.1/Makefile.am	2021-10-05 21:40:21.552501388 +0200
@@ -64,9 +64,12 @@ ETTER_PASSIVE = $(ETTER_PASSIVE_FILE).gz
 ETTER_PASSIVE_DOWNLOAD_FROM = "http://ettercap.cvs.sourceforge.net/ettercap/ettercap_ng/share"
 ETTER_PASSIVE_DOWNLOAD_PARMS = "rev=HEAD"
 
+OUI_FILES = \
+	oui.txt.gz
+
 NTOPDATA = ntop-cert.pem \
            $(ETTER_PASSIVE) \
-           oui.txt.gz \
+           $(OUI_FILES) \
            specialMAC.txt.gz \
 	   GeoIPASNum.dat \
 	   GeoLiteCity.dat