diff --git a/ghostscript-gstoraster-costs.patch b/ghostscript-gstoraster-costs.patch
new file mode 100644
index 0000000..e811d47
--- /dev/null
+++ b/ghostscript-gstoraster-costs.patch
@@ -0,0 +1,11 @@
+diff -up ghostscript-9.07/cups/gstoraster.convs.gstoraster-costs ghostscript-9.07/cups/gstoraster.convs
+--- ghostscript-9.07/cups/gstoraster.convs.gstoraster-costs	2013-02-14 07:58:16.000000000 +0000
++++ ghostscript-9.07/cups/gstoraster.convs	2013-08-21 12:52:25.255346352 +0100
+@@ -26,5 +26,5 @@
+ #
+ # CUPS file conversion rules for gstoraster filter
+ 
+-application/vnd.cups-pdf	application/vnd.cups-raster	66	gstoraster
+-application/vnd.cups-postscript	application/vnd.cups-raster	100	gstoraster
++application/vnd.cups-pdf	application/vnd.cups-raster	99	gstoraster
++application/vnd.cups-postscript	application/vnd.cups-raster	200	gstoraster
diff --git a/ghostscript.spec b/ghostscript.spec
index 82b3ef5..367524e 100644
--- a/ghostscript.spec
+++ b/ghostscript.spec
@@ -5,7 +5,7 @@ Summary: A PostScript interpreter and renderer
 Name: ghostscript
 Version: %{gs_ver}
 
-Release: 11%{?dist}
+Release: 12%{?dist}
 
 # Included CMap data is Redistributable, no modification permitted,
 # see http://bugzilla.redhat.com/487510
@@ -31,6 +31,7 @@ Patch12: ghostscript-strange-fonts.patch
 Patch13: ghostscript-wrf-snprintf.patch
 Patch14: ghostscript-cups-colord.patch
 Patch15: ghostscript-zfapi-crash.patch
+Patch16: ghostscript-gstoraster-costs.patch
 
 Requires: urw-fonts >= 1.1, ghostscript-fonts
 Requires: poppler-data
@@ -158,6 +159,9 @@ rm -rf expat freetype icclib jasper jpeg lcms lcms2 libpng openjpeg zlib cups/li
 # Upstream patch from bug #693921 to avoid zfapi crash (bug #969785).
 %patch15 -p1 -b .zfapi-crash
 
+# Tweak filter costs for gstoraster (part of bug #998977).
+%patch16 -p1 -b .gstoraster-costs
+
 # Remove pdfopt man pages which were mistakenly left in (bug #963882).
 rm man/{de/,}pdfopt.1
 
@@ -357,6 +361,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_libdir}/libgs.so
 
 %changelog
+* Wed Aug 21 2013 Tim Waugh <twaugh@redhat.com> 9.07-12
+- Tweak filter costs for gstoraster (part of bug #998977).
+
 * Thu Jul 18 2013 Tim Waugh <twaugh@redhat.com> 9.07-11
 - Remove bundled (and unused) lcms source.
 - Fixed license tag (AGPLv3+).