diff --git a/gtk+.spec b/gtk+.spec
index 4167db7..a5754d4 100644
--- a/gtk+.spec
+++ b/gtk+.spec
@@ -2,7 +2,7 @@ Summary:	The GIMP ToolKit
 Name:		gtk+
 Epoch:		1
 Version:	1.2.10
-Release:	87%{?dist}
+Release:	88%{?dist}
 License:	LGPLv2+
 URL:		http://www.gtk.org/
 Source0:	http://download.gimp.org/pub/gtk/v1.2/gtk+-%{version}.tar.gz
@@ -77,13 +77,13 @@ Patch37:	gtk+-1.2.10-format.patch
 
 BuildRequires:	coreutils
 BuildRequires:	gettext
-BuildRequires:	glib-devel%{?_isa} >= 1:%{version}
+BuildRequires:	glib-devel >= 1:%{version}
 BuildRequires:	glibc-common
 BuildRequires:	libtool
-BuildRequires:	libX11-devel%{?_isa}
-BuildRequires:	libXext-devel%{?_isa}
-BuildRequires:	libXi-devel%{?_isa}
-BuildRequires:	libXt-devel%{?_isa}
+BuildRequires:	libX11-devel
+BuildRequires:	libXext-devel
+BuildRequires:	libXi-devel
+BuildRequires:	libXt-devel
 BuildRequires:	make
 
 %description
@@ -99,7 +99,6 @@ Provides:	gtk1-devel = %{version}-%{release}
 Provides:	gtk1-devel%{?_isa} = %{version}-%{release}
 Requires:	%{name}%{?_isa} = %{epoch}:%{version}-%{release}
 Requires:	glib-devel%{?_isa}
-Requires:	pkgconfig
 Requires:	libX11-devel%{?_isa}
 Requires:	libXext-devel%{?_isa}
 Requires:	libXi-devel%{?_isa}
@@ -238,6 +237,10 @@ make check LIBTOOL=/usr/bin/libtool
 %{_mandir}/man1/gtk-config.1*
 
 %changelog
+* Wed Feb 14 2018 Rex Dieter <rdieter@fedoraproject.org> - 1:1.2.10-87
+- drop using arch-dependent BuildRequires (#1545186)
+- -devel: drop explicit Requires: pkgconfig
+
 * Wed Feb  7 2018 Paul Howarth <paul@city-fan.org> - 1:1.2.10-87
 - ldconfig scriptlets replaced by RPM File Triggers from Fedora 28
 - Drop legacy BuildRoot: and Group: tags