diff --git a/ghostscript-9.20-system-zlib.patch b/ghostscript-9.20-system-zlib.patch
deleted file mode 100644
index d632fcb..0000000
--- a/ghostscript-9.20-system-zlib.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-diff -up ghostscript-9.12/configure.ac.sys-zlib ghostscript-9.12/configure.ac
---- ghostscript-9.12/configure.ac.sys-zlib	2014-03-26 11:48:54.983972222 +0000
-+++ ghostscript-9.12/configure.ac	2014-03-26 11:49:36.807230531 +0000
-@@ -854,7 +854,7 @@ AC_MSG_CHECKING([for local zlib source])
- dnl zlib is needed for language level 3, and libpng
- # we must define ZLIBDIR regardless because png.mak does a -I$(ZLIBDIR)
- # this seems a harmless default
--ZLIBDIR=src
-+ZLIBDIR=$includedir
- AUX_SHARED_ZLIB=
- 
- if test -d $srcdir/zlib; then
-diff -up ghostscript-9.12/configure.sys-zlib ghostscript-9.12/configure
---- ghostscript-9.12/configure.sys-zlib	2014-03-26 11:49:45.547284521 +0000
-+++ ghostscript-9.12/configure	2014-03-26 11:49:56.171350127 +0000
-@@ -6254,7 +6254,7 @@ fi
- $as_echo_n "checking for local zlib source... " >&6; }
- # we must define ZLIBDIR regardless because png.mak does a -I$(ZLIBDIR)
- # this seems a harmless default
--ZLIBDIR=src
-+ZLIBDIR=$includedir
- AUX_SHARED_ZLIB=
- 
- if test -d $srcdir/zlib; then
-
diff --git a/ghostscript-9.27-system-zlib.patch b/ghostscript-9.27-system-zlib.patch
new file mode 100644
index 0000000..2ce1419
--- /dev/null
+++ b/ghostscript-9.27-system-zlib.patch
@@ -0,0 +1,24 @@
+diff -Nru ghostscript-9.27.orig/configure ghostscript-9.27/configure
+--- ghostscript-9.27.orig/configure	2019-04-04 09:43:48.000000000 +0200
++++ ghostscript-9.27/configure	2019-08-14 22:47:12.392000000 +0200
+@@ -7295,7 +7295,7 @@
+ $as_echo_n "checking for local zlib source... " >&6; }
+ # we must define ZLIBDIR regardless because png.mak does a -I$(ZLIBDIR)
+ # this seems a harmless default
+-ZLIBDIR=src
++ZLIBDIR=$includedir
+ AUX_SHARED_ZLIB=
+ ZLIBCFLAGS=""
+ 
+diff -Nru ghostscript-9.27.orig/configure.ac ghostscript-9.27/configure.ac
+--- ghostscript-9.27.orig/configure.ac	2019-04-04 09:43:14.000000000 +0200
++++ ghostscript-9.27/configure.ac	2019-08-14 22:47:26.573000000 +0200
+@@ -1092,7 +1092,7 @@
+ dnl zlib is needed for language level 3, and libpng
+ # we must define ZLIBDIR regardless because png.mak does a -I$(ZLIBDIR)
+ # this seems a harmless default
+-ZLIBDIR=src
++ZLIBDIR=$includedir
+ AUX_SHARED_ZLIB=
+ ZLIBCFLAGS=""
+ 
diff --git a/ghostscript.spec b/ghostscript.spec
index 90976f2..4fb4392 100644
--- a/ghostscript.spec
+++ b/ghostscript.spec
@@ -3,7 +3,7 @@
 
 Name:          ghostscript
 Version:       9.27
-Release:       1mamba
+Release:       2mamba
 Summary:       The GPL release of the Ghostscript interpreter
 Group:         Applications/Publishing
 Vendor:        openmamba
@@ -14,7 +14,7 @@ Source:        https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/do
 #Source:        http://downloads.ghostscript.com/public/ghostscript-%{version}.tar.gz
 #Source:        http://downloads.sourceforge.net/sourceforge/ghostscript/ghostscript-%{version}.tar.bz2
 Patch0:        ghostscript-9.07-european-locales-comma-separator.patch
-Patch1:        ghostscript-9.20-system-zlib.patch
+Patch1:        ghostscript-9.27-system-zlib.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -297,6 +297,9 @@ rm -f %{buildroot}%{_datadir}/ghostscript/%{version}/doc
 %{_libdir}/ghostscript/*/X11.so
 
 %changelog
+* Wed Aug 14 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 9.27-2mamba
+- rebuilt
+
 * Thu Apr 04 2019 Automatic Build System <autodist@mambasoft.it> 9.27-1mamba
 - automatic version update by autodist