diff --git a/netdiscover.spec b/netdiscover.spec
index 342f05c..0e7b3a0 100644
--- a/netdiscover.spec
+++ b/netdiscover.spec
@@ -47,7 +47,7 @@ mode, which will scan for common local networks.
 %build
 autoreconf -fiv
 %configure
-cp %{_datadir}/hwdata/oui.txt ./oui.txt-$(date +%{Y}%{m}%{d})
+cp %{_datadir}/hwdata/oui.txt ./oui.txt-$(date +%Y%m%d)
 sh update-oui-database.sh --no-download
 %make_build