--- a/gtk-icon-cache.filetrigger
+++ b/gtk-icon-cache.filetrigger
@@ -1,4 +1,6 @@
-#!/bin/sh -efu
+#!/bin/sh -ef
+
+[ -z "$DURING_INSTALL" ] || exit 0
 
 LC_ALL=C egrep -o '^/usr/share/icons/[^/]+/' |
 LC_ALL=C sort -u |
--- /dev/null
+++ b/gtk-icon-cache.firsttime
@@ -0,0 +1,9 @@
+#!/bin/sh -eu
+
+export LC_ALL=POSIX
+
+ls -1 /usr/share/icons/*/index.theme 2>/dev/null | \
+while read path
+do
+    gtk-update-icon-cache --force --quiet `dirname $path`
+done
--- a/libgtk+2.spec
+++ b/libgtk+2.spec
@@ -30,6 +30,7 @@ Source2: %name-gdk.lds
 Source3: %name-gtk.map
 Source4: %name-gtk.lds
 Source5: gtk-icon-cache.filetrigger
+Source6: gtk-icon-cache.firsttime
 
 Patch1: gtk+-2.16.5-alt-stop-spam.patch
 Patch6: gtk+-2.10.6-fix-drop-gdk_colormap_change.patch
@@ -258,6 +259,7 @@ cp -a examples/ %buildroot/%_docdir/%name-devel-%version/
 
 # rpm posttrans filetriggers
 install -pD -m755 {%_sourcedir,%buildroot%_rpmlibdir}/gtk-icon-cache.filetrigger
+install -pD -m755 %SOURCE6 %buildroot%_sysconfdir/firsttime.d/gtk-icon-cache
 
 %post
 %_bindir/gtk-query-immodules-%api_ver > %_sysconfdir/gtk-%api_ver/gtk.immodules
@@ -294,6 +296,7 @@ install -pD -m755 {%_sourcedir,%buildroot%_rpmlibdir}/gtk-icon-cache.filetrigger
 %_bindir/gtk-update-icon-cache
 %_man1dir/gtk-update-icon-cache*
 %_rpmlibdir/gtk-icon-cache.filetrigger
+%config %_sysconfdir/firsttime.d/gtk-icon-cache
 
 %files -n gtk-builder-convert
 %_bindir/gtk-builder-convert