diff --git a/sane-backends.spec b/sane-backends.spec
index 6e1b9dc..1fa0f80 100644
--- a/sane-backends.spec
+++ b/sane-backends.spec
@@ -10,7 +10,7 @@
 %endif
 
 %if !0%{?fedora}%{?rhel} || 0%{?fedora} >= 17 || 0%{?rhel} >= 7
-%global udevrulesdir %{prefix}/lib/udev/rules.d
+%global udevrulesdir %{_prefix}/lib/udev/rules.d
 %else
 %global udevrulesdir /lib/udev/rules.d
 %endif
@@ -18,7 +18,7 @@
 Summary: Scanner access software
 Name: sane-backends
 Version: 1.0.23
-Release: 3%{?dist}
+Release: 4%{?dist}
 # lib/ is LGPLv2+, backends are GPLv2+ with exceptions
 # Tools are GPLv2+, docs are public domain
 # see LICENSE for details