diff --git a/ghostscript-exactly-enable-cidfnmap.patch b/ghostscript-exactly-enable-cidfnmap.patch
new file mode 100644
index 0000000..3eb3598
--- /dev/null
+++ b/ghostscript-exactly-enable-cidfnmap.patch
@@ -0,0 +1,66 @@
+--- espgs-8.15.4/lib/cjkv/tt11util.ps.exactly-enable-cidfnmap	2006-06-06 10:59:04.000000000 +0100
++++ espgs-8.15.4/lib/cjkv/tt11util.ps	2007-04-17 11:09:56.000000000 +0100
+@@ -179,6 +179,7 @@
+                 %dup /gsubhog exch _cjkv_type11_tmp /gsubost get _cjkv_type11_tmp /gsubocv get add 4 add _cjkv_type11_tmp /gsubglc get getinterval _cjkv_type11_tmp 3 1 roll put
+                 dup /gsubvog exch _cjkv_type11_tmp /gsubost get 6 add _cjkv_type11_tmp /gsubglc get 2 mul getinterval _cjkv_type11_tmp 3 1 roll put
+                 dup /cvfmt exch _cjkv_type11_tmp /gsubost get _cjkv_type11_tmp /gsubocv get add 0 add .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
++                _cjkv_type11_tmp /cvfmt get 1 eq {
+                 dup /cvglc exch _cjkv_type11_tmp /gsubost get _cjkv_type11_tmp /gsubocv get add 2 add .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
+                 dup /gsubhog exch _cjkv_type11_tmp /gsubost get _cjkv_type11_tmp /gsubocv get add 4 add _cjkv_type11_tmp /cvglc get 2 mul getinterval _cjkv_type11_tmp 3 1 roll put
+                 CJKV_DEBUG_GSUB {
+@@ -194,25 +195,26 @@
+                     _cjkv_type11_tmp /gsubvog get exch .cjkv_getu16 =
+                   } for
+                 } if
+-                _cjkv_type11_tmp /cvfmt get 1 eq {
+                   /gsubh2v << 0 2 _cjkv_type11_tmp /gsubhog get length 2 sub {
+                     dup _cjkv_type11_tmp /gsubhog get exch .cjkv_getu16
+                     exch _cjkv_type11_tmp /gsubvog get exch .cjkv_getu16
+                   } for >> _cjkv_type11_tmp 3 1 roll put
+                 } {
+                   _cjkv_type11_tmp /cvfmt get 2 eq {
+-                    /gsubh2v << 0 6 _cjkv_type11_tmp /gsubhog get length 6 sub {
+-                      dup 0 add /fgid exch _cjkv_type11_tmp /gsubhog get exch .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
+-                      dup 2 add /lgid exch _cjkv_type11_tmp /gsubhog get exch .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
+-                      4 add /cvidx exch _cjkv_type11_tmp /gsubhog get exch .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
++                    dup /cvrngc exch _cjkv_type11_tmp /gsubost get _cjkv_type11_tmp /gsubocv get add 2 add .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
++                    dup /cvrngs exch _cjkv_type11_tmp /gsubost get _cjkv_type11_tmp /gsubocv get add 4 add _cjkv_type11_tmp /cvrngc get 6 mul getinterval _cjkv_type11_tmp 3 1 roll put
++                    /gsubh2v << 0 6 _cjkv_type11_tmp /cvrngs get length 6 sub {
++                      dup 0 add /fgid exch _cjkv_type11_tmp /cvrngs get exch .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
++                      dup 2 add /lgid exch _cjkv_type11_tmp /cvrngs get exch .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
++                      4 add /cvidx exch _cjkv_type11_tmp /cvrngs get exch .cjkv_getu16 _cjkv_type11_tmp 3 1 roll put
+                       CJKV_DEBUG_GSUB {
+                         (fgid: ) print _cjkv_type11_tmp /fgid get =
+                         (lgid: ) print _cjkv_type11_tmp /lgid get =
+                         (cvidx: ) print _cjkv_type11_tmp /cvidx get =
+                       } if
+                       _cjkv_type11_tmp /fgid get 1 _cjkv_type11_tmp /lgid get {
+-                        dup _cjkv_type11_tmp /cvidx get add _cjkv_type11_tmp /fgid get sub
+-                        exch _cjkv_type11_tmp /gsubvog get exch .cjkv_getu16
++                        dup _cjkv_type11_tmp /cvidx get add _cjkv_type11_tmp /fgid get sub 2 mul
++                        _cjkv_type11_tmp /gsubvog get exch .cjkv_getu16
+                       } for
+                     } for >> _cjkv_type11_tmp 3 1 roll put
+                   } {
+--- espgs-8.15.4/lib/cjkv/cjkfnmap.ps.exactly-enable-cidfnmap	2007-04-17 11:04:52.000000000 +0100
++++ espgs-8.15.4/lib/cjkv/cjkfnmap.ps	2007-04-17 11:09:56.000000000 +0100
+@@ -56,6 +56,11 @@
+ % Define the name of the CID font map file.
+ userdict /_cjkv_CIDFontmap 10 dict put
+ 
++  /.cjkv_erase_cidfmap_entry {
++    CJKV_DEBUG_FNMAP { (erase cidfmap entry for: ) print dup == } if
++    /CIDFont /Category findresource /.map get exch undef
++  } bind def
++
+ % <dict> <file> .readCIDFontmap <dict>
+ % Code from gs_fonts.ps::.readFontmap
+   /.cjkv_readCIDFontmap {
+@@ -67,6 +72,7 @@
+          ( has no associated file or alias name!  Giving up.) = flush
+          {.cjkv_readCIDFontmap} 0 get 1 .quit
+        } if
++      1 index .cjkv_erase_cidfmap_entry
+       dup type dup /stringtype eq exch /nametype eq or not
+        { (CIDFontmap entry for ) print 1 index =only
+          ( has an invalid file or alias name!  Giving up.) = flush
diff --git a/ghostscript.spec b/ghostscript.spec
index 3aa7b6a..50395ff 100644
--- a/ghostscript.spec
+++ b/ghostscript.spec
@@ -23,6 +23,7 @@ Patch5: ghostscript-split-cidfnmap.patch
 Patch6: ghostscript-gxcht-64bit-crash.patch
 Patch7: ghostscript-dvipdf.patch
 Patch8: ghostscript-Fontmap.local.patch
+Patch9: ghostscript-exactly-enable-cidfnmap.patch
 
 Requires: urw-fonts >= 1.1, ghostscript-fonts
 BuildRequires: libjpeg-devel, libXt-devel
@@ -100,6 +101,10 @@ A GTK-enabled version of Ghostscript, called 'gsx'.
 # Allow local overrides for Fontmap (bug #233966).
 %patch8 -p1 -b .Fontmap.local
 
+# Apply fonts in CIDFnmap even if the same fontnames are already registered
+# (bug #163231).
+%patch9 -p1 -b .exactly-enable-cidfnmap
+
 # Convert manual pages to UTF-8
 from8859_1() {
 	iconv -f iso-8859-1 -t utf-8 < "$1" > "${1}_"
@@ -269,6 +274,8 @@ rm -rf $RPM_BUILD_ROOT
 
 %changelog
 * Tue Apr 17 2007 Tim Waugh <twaugh@redhat.com> 8.15.4-3
+- Apply fonts in CIDFnmap even if the same fontnames are already registered
+  (bug #163231).
 - New file CIDFmap (bug #233966).
 - Allow local overrides for FAPIcidfmap, cidfmap and Fontmap (bug #233966).