diff --git a/usb_modeswitch.spec b/usb_modeswitch.spec
index 0550d70..49cbc4f 100644
--- a/usb_modeswitch.spec
+++ b/usb_modeswitch.spec
@@ -2,7 +2,7 @@
 
 Name:		usb_modeswitch
 Version:	2.5.1
-Release:	2%{?dist}
+Release:	3%{?dist}
 Summary:	USB Modeswitch gets mobile broadband cards in operational mode
 Summary(de):	USB Modeswitch aktiviert UMTS-Karten
 Group:		Applications/System
@@ -55,7 +55,8 @@ cp -f %{SOURCE1} device_reference.txt
 
 
 %build
-CFLAGS="$RPM_OPT_FLAGS" make %{?_smp_mflags}
+%{set_build_flags}
+make %{?_smp_mflags}
 
 
 %install
@@ -78,6 +79,9 @@ make install \
 
 
 %changelog
+* Fri Feb 23 2018 Florian Weimer <fweimer@redhat.com> - 2.5.1-3
+- Use LDFLAGS from redhat-rpm-config
+
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.5.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild