diff --git a/nbdkit.spec b/nbdkit.spec
index e23c8f8..32781c2 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -143,25 +143,25 @@ BuildRequires:  gnupg2
 %endif
 
 # Only for running the test suite:
-BuildRequires:  %{_bindir}/bc
-BuildRequires:  %{_bindir}/certtool
-BuildRequires:  %{_bindir}/cut
+BuildRequires:  /usr/bin/bc
+BuildRequires:  /usr/bin/certtool
+BuildRequires:  /usr/bin/cut
 BuildRequires:  expect
-BuildRequires:  %{_bindir}/hexdump
-BuildRequires:  %{_sbindir}/ip
+BuildRequires:  /usr/bin/hexdump
+BuildRequires:  /usr/sbin/ip
 BuildRequires:  jq
-BuildRequires:  %{_bindir}/nbdcopy
-BuildRequires:  %{_bindir}/nbdinfo
-BuildRequires:  %{_bindir}/nbdsh
-BuildRequires:  %{_bindir}/qemu-img
-BuildRequires:  %{_bindir}/qemu-io
-BuildRequires:  %{_bindir}/qemu-nbd
-BuildRequires:  %{_sbindir}/sfdisk
+BuildRequires:  /usr/bin/nbdcopy
+BuildRequires:  /usr/bin/nbdinfo
+BuildRequires:  /usr/bin/nbdsh
+BuildRequires:  /usr/bin/qemu-img
+BuildRequires:  /usr/bin/qemu-io
+BuildRequires:  /usr/bin/qemu-nbd
+BuildRequires:  /usr/sbin/sfdisk
 %if !0%{?rhel}
-BuildRequires:  %{_bindir}/socat
+BuildRequires:  /usr/bin/socat
 %endif
-BuildRequires:  %{_sbindir}/ss
-BuildRequires:  %{_bindir}/stat
+BuildRequires:  /usr/sbin/ss
+BuildRequires:  /usr/bin/stat
 
 # This package has RPM rules that create the automatic Provides: for
 # nbdkit plugins and filters.  This means nbdkit build depends on
@@ -316,7 +316,7 @@ for %{name}.
 Summary:        Write small inline C plugins and scripts for %{name}
 Requires:       %{name}-server%{?_isa} = %{version}-%{release}
 Requires:       gcc
-Requires:       %{_bindir}/cat
+Requires:       /usr/bin/cat
 
 %description cc-plugin
 This package contains support for writing inline C plugins and scripts