diff --git a/gsoap.changes b/gsoap.changes
index 0763d75..ce5d0c7 100644
--- a/gsoap.changes
+++ b/gsoap.changes
@@ -3,6 +3,8 @@ Wed Aug 14 18:19:03 UTC 2019 - Jan Engelhardt <jengelh@inai.de>
 
 - Update to new upstream release 2.8.90
   * Internal changes related to gsoap's own build only.
+- Add revert-z.diff to counter a regression in handling the
+  soapcpp2 "-z" option introduced in 2.8.89.
 
 -------------------------------------------------------------------
 Sun Aug 11 13:33:42 UTC 2019 - Jan Engelhardt <jengelh@inai.de>
diff --git a/gsoap.spec b/gsoap.spec
index 4a9e354..235760c 100644
--- a/gsoap.spec
+++ b/gsoap.spec
@@ -29,6 +29,7 @@ Source:         gsoap-%version.tar.xz
 Source2:        sanitize_source.sh
 Patch1:         gsoap-automake1_13.diff
 Patch2:         gsoap-01-sharedlibs.diff
+Patch3:         revert-z.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  autoconf
 BuildRequires:  automake
@@ -83,7 +84,7 @@ This subpackage contains the documentation for the gSOAP toolkit.
 %prep
 %setup -q
 cmp gsoap/stdsoap2.cpp gsoap/stdsoap2.c
-%patch -P 1 -P 2 -p1
+%patch -P 1 -P 2 -P 3 -p1
 ln -fs stdsoap2.cpp gsoap/stdsoap2.c
 
 %build
diff --git a/revert-z.diff b/revert-z.diff
new file mode 100644
index 0000000..9a59e8d
--- /dev/null
+++ b/revert-z.diff
@@ -0,0 +1,33 @@
+From: Jan Engelhardt <jengelh@inai.de>
+Upstream: https://sourceforge.net/p/gsoap2/bugs/1253/
+
+Revert broken code change in 2.8.89 that ignores all -z options.
+
+diff --git a/gsoap/src/soapcpp2.c b/gsoap/src/soapcpp2.c
+index 34ca6fce..3a92e297 100644
+--- a/gsoap/src/soapcpp2.c
++++ b/gsoap/src/soapcpp2.c
+@@ -356,22 +356,15 @@ infile  header file to parse (if none reads stdin)\n\
+             vflag = 1;
+             break;
+           case 'z':
+-          {
+-            int z = zflag;
+             a++;
+-            if (zflag)
+-              fprintf(stderr, "soapcpp2: Option -z specified twice\n");
+             g = 0;
+             if (*a)
+               zflag = *a - '0';
+             else if (i < argc && argv[++i])
+               zflag = *argv[i] - '0';
+             else
+-              execerror("Option -z requires an argument");
+-            if (zflag == 0 || z < zflag)
+-              zflag = z;
++              execerror("Option -z requires a digit");
+             break;
+-          }
+           default:
+             fprintf(stderr, "soapcpp2: Unknown option %s\n", a);
+             exit(1);