diff --git a/xorgproto.changes b/xorgproto.changes
index 70d3598..6ed80d1 100644
--- a/xorgproto.changes
+++ b/xorgproto.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Wed Jun 27 23:07:34 UTC 2018 - tobias.johannes.klausmann@mni.thm.de
+
+- Obsolete protocol packages by their corresponding old package names, not by
+  their pkconfig(...) provides. Additionally move the obsoletes to the -devel
+  package to take effect.
+
 -------------------------------------------------------------------
 Wed Feb 28 20:45:12 UTC 2018 - tobias.johannes.klausmann@mni.thm.de
 
diff --git a/xorgproto.spec b/xorgproto.spec
index 76fd8e6..72e847a 100644
--- a/xorgproto.spec
+++ b/xorgproto.spec
@@ -30,37 +30,8 @@ Source:         http://xorg.freedesktop.org/releases/individual/proto/%name-%ver
 BuildRequires:  pkg-config
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
-Obsoletes:      pkgconfig(applewmproto) <= 1.4.2
-Obsoletes:      pkgconfig(bigreqsproto) <= 1.1.2
-Obsoletes:      pkgconfig(compositeproto) <= 0.4.2
-Obsoletes:      pkgconfig(damageproto) <= 1.2.1
-Obsoletes:      pkgconfig(dmxproto) <= 2.3.1
-Obsoletes:      pkgconfig(dri2proto) <= 2.8
-Obsoletes:      pkgconfig(dri3proto) <= 1.2
-Obsoletes:      pkgconfig(fixesproto) <= 5.0
-Obsoletes:      pkgconfig(fontsproto) <= 2.1.3
-Obsoletes:      pkgconfig(glproto) <= 1.4.17
-Obsoletes:      pkgconfig(inputproto) <= 2.3.2
-Obsoletes:      pkgconfig(kbproto) <= 1.0.7
-Obsoletes:      pkgconfig(presentproto) <= 1.2
-Obsoletes:      pkgconfig(randrproto) <= 1.6.0
-Obsoletes:      pkgconfig(recordproto) <= 1.14.2
-Obsoletes:      pkgconfig(renderproto) <= 0.11.1
-Obsoletes:      pkgconfig(resourceproto) <= 1.2.0
-Obsoletes:      pkgconfig(scrnsaverproto) <= 1.2.2
-Obsoletes:      pkgconfig(trapproto) <= 3.4.3
-Obsoletes:      pkgconfig(videoproto) <= 2.3.3
-Obsoletes:      pkgconfig(windowswmproto) <= 1.0.4
-Obsoletes:      pkgconfig(xcmiscproto) <= 1.2.2
-Obsoletes:      pkgconfig(xextproto) <= 7.3.0
-Obsoletes:      pkgconfig(xf86bigfontproto) <= 1.2.0
-Obsoletes:      pkgconfig(xf86dgaproto) <= 2.1
-Obsoletes:      pkgconfig(xf86driproto) <= 2.1.1
-Obsoletes:      pkgconfig(xf86miscproto) <= 0.9.3
-Obsoletes:      pkgconfig(xf86vidmodeproto) <= 2.3.1
-Obsoletes:      pkgconfig(xineramaproto) <= 1.2.1
-Obsoletes:      pkgconfig(xproto) <= 7.0.32
-Obsoletes:      pkgconfig(xproxymngproto) <= 1.0.3
+
+
 
 %description
 The X11 protocol headers for X11 development.
@@ -76,8 +47,39 @@ xproto and xproxymngproto.
 Summary:        The X11 Protocol collection
 Group:          Development/Libraries/X11
 
-Provides:       xorg-x11-proto-devel:%_libdir/pkgconfig/presentproto.pc
 Obsoletes:      xorgproto-devel < %{version}
+# the next is for obsoleting applewmproto <= 1.4.2
+Obsoletes:      xorg-x11-proto-devel
+Obsoletes:      bigreqsproto-devel <= 1.1.2
+Obsoletes:      compositeproto-devel <= 0.4.2
+Obsoletes:      damageproto-devel <= 1.2.1
+Obsoletes:      dmxproto-devel <= 2.3.1
+Obsoletes:      dri2proto-devel <= 2.8
+Obsoletes:      dri3proto-devel <= 1.2
+Obsoletes:      fixesproto-devel <= 5.0
+Obsoletes:      fontsproto-devel <= 2.1.3
+Obsoletes:      glproto-devel <= 1.4.17
+Obsoletes:      inputproto-devel <= 2.3.2
+Obsoletes:      kbproto-devel <= 1.0.7
+Obsoletes:      presentproto-devel <= 1.2
+Obsoletes:      randrproto-devel <= 1.6.0
+Obsoletes:      recordproto-devel <= 1.14.2
+Obsoletes:      renderproto-devel <= 0.11.1
+Obsoletes:      resourceproto-devel <= 1.2.0
+Obsoletes:      scrnsaverproto-devel <= 1.2.2
+Obsoletes:      trapproto-devel <= 3.4.3
+Obsoletes:      videoproto-devel <= 2.3.3
+Obsoletes:      windowswmproto-devel <= 1.0.4
+Obsoletes:      xcmiscproto-devel <= 1.2.2
+Obsoletes:      xextproto-devel <= 7.3.0
+Obsoletes:      xf86bigfontproto-devel <= 1.2.0
+Obsoletes:      xf86dgaproto-devel <= 2.1
+Obsoletes:      xf86driproto-devel <= 2.1.1
+Obsoletes:      xf86miscproto-devel <= 0.9.3
+Obsoletes:      xf86vidmodeproto-devel <= 2.3.1
+Obsoletes:      xineramaproto-devel <= 1.2.1
+Obsoletes:      xproto-devel <= 7.0.32
+Obsoletes:      xproxymngproto-devel <= 1.0.3
 
 %description devel
 The compelte X11 protocol headers for X11 development.