diff --git a/graphviz_14-0-0.patch b/graphviz_14-0-0.patch
index 61e41c0..90aa1a2 100644
--- a/graphviz_14-0-0.patch
+++ b/graphviz_14-0-0.patch
@@ -1,88 +1,42 @@
 ---
- pygraphviz/graphviz.i |    5 +++++
- setup.py              |   41 +++++++++++++++++++++++++++++++++++++++--
- 2 files changed, 44 insertions(+), 2 deletions(-)
+ pygraphviz/graphviz_wrap.c |   12 +++++++++++-
+ 1 file changed, 11 insertions(+), 1 deletion(-)
 
-Index: pygraphviz-1.14/pygraphviz/graphviz.i
+Index: pygraphviz-1.14/pygraphviz/graphviz_wrap.c
 ===================================================================
---- pygraphviz-1.14.orig/pygraphviz/graphviz.i	2024-09-29 20:31:00.000000000 +0200
-+++ pygraphviz-1.14/pygraphviz/graphviz.i	2025-10-23 00:14:21.676670665 +0200
-@@ -338,7 +338,12 @@
- /* three lines are straight from the SWIG manual.  */
- %include <cstring.i>
- %include <typemaps.i>
-+#if GRAPHVIZ_VERSION_MAJOR >= 14
-+%cstring_output_allocate_size(char **result, size_t* size, free(*$1));
-+int gvRenderData(GVC_t *gvc, Agraph_t* g, char *format, char **result, size_t *size);
-+#else
- %cstring_output_allocate_size(char **result, unsigned int* size, free(*$1));
- int gvRenderData(GVC_t *gvc, Agraph_t* g, char *format, char **result, unsigned int *size);
+--- pygraphviz-1.14.orig/pygraphviz/graphviz_wrap.c	2024-09-29 20:31:00.000000000 +0200
++++ pygraphviz-1.14/pygraphviz/graphviz_wrap.c	2025-10-24 18:49:18.399642610 +0200
+@@ -3022,6 +3022,11 @@
+ 
+ #include "graphviz/cgraph.h"
+ #include "graphviz/gvc.h"
++#include "graphviz/graphviz_version.h"
++
++#ifndef GRAPHVIZ_VERSION_MAJOR
++#define GRAPHVIZ_VERSION_MAJOR 12
 +#endif
- /* Free memory allocated and pointed to by *result in gvRenderData */
- extern void gvFreeRenderData (char* data);
-Index: pygraphviz-1.14/setup.py
-===================================================================
---- pygraphviz-1.14.orig/setup.py	2024-09-29 20:31:00.000000000 +0200
-+++ pygraphviz-1.14/setup.py	2025-10-23 00:45:39.447285598 +0200
-@@ -1,15 +1,51 @@
- import sys
-+import os
-+import re
- from setuptools import setup, Extension
  
-+def get_graphviz_version():
-+    """
-+    Reads GRAPHVIZ_VERSION_MAJOR from the header file.
-+    Assumes the header is available at a known path during setup.
-+    """
-+    # NOTE: You may need to adjust this path based on your environment
-+    # or rely on the build system to have already installed it.
-+    header_path = '/usr/include/graphviz/graphviz_version.h'
-+
-+    if not os.path.exists(header_path):
-+        # Fallback/default if header file cannot be read during setup.
-+        # This should match your expected target version.
-+        raise RuntimeError(f"Graphviz header file not found at {header_path}.")
-+
-+    with open(header_path, 'r') as f:
-+        content = f.read()
-+        match = re.search(r'#define\s+GRAPHVIZ_VERSION_MAJOR\s+(\d+)', content)
-+        if match:
-+            return int(match.group(1))
-+        else:
-+            match = re.search(r'#define\s+PACKAGE_VERSION\s+"([0-9.]+)"', content)
-+            if match:
-+                maj_ver = match.group(1).split('.')[0]
-+                return int(maj_ver)
-+
-+    raise RuntimeError(f"GRAPHVIZ_VERSION_MAJOR macro not found in the header file!")
-+
- if __name__ == "__main__":
--    define_macros = [("SWIG_PYTHON_STRICT_BYTE_CHAR", None)]
-+    # Get the target version number
-+    gv_major_version = get_graphviz_version()
-+
-+    define_macros = []
-+    swig_options = []
-     if sys.platform == "win32":
-         define_macros.append(("GVDLL", None))
- 
-+    swig_options.append("-DGRAPHVIZ_VERSION_MAJOR={}".format(str(gv_major_version)))
-+    print(f"Defining GRAPHVIZ_VERSION_MAJOR as: {gv_major_version}")
-+
-     extension = [
-         Extension(
-             name="pygraphviz._graphviz",
--            sources=["pygraphviz/graphviz_wrap.c"],
-+            sources=["pygraphviz/graphviz.i"],
-             include_dirs=[],
-             library_dirs=[],
-             # cdt does not link to cgraph, whereas cgraph links to cdt.
-@@ -20,6 +56,7 @@
-             # undefined symbol errors. seen under PyPy on Linux.)
-             libraries=["cdt", "cgraph", "gvc"],
-             define_macros=define_macros,
-+	    swig_opts=swig_options,
-         )
-     ]
  
+ SWIGINTERN swig_type_info*
+@@ -5447,7 +5452,13 @@
+   Agraph_t *arg2 = (Agraph_t *) 0 ;
+   char *arg3 = (char *) 0 ;
+   char **arg4 = (char **) 0 ;
++#if GRAPHVIZ_VERSION_MAJOR >= 14
++  size_t *arg5 = (size_t *) 0 ;
++  size_t tempn4 ;
++#else
+   unsigned int *arg5 = (unsigned int *) 0 ;
++  unsigned int tempn4 ;
++#endif
+   void *argp1 = 0 ;
+   int res1 = 0 ;
+   void *argp2 = 0 ;
+@@ -5456,7 +5467,6 @@
+   char *buf3 = 0 ;
+   int alloc3 = 0 ;
+   char *temp4 = 0 ;
+-  unsigned int tempn4 ;
+   PyObject *swig_obj[3] ;
+   int result;
+   
diff --git a/python-pygraphviz.changes b/python-pygraphviz.changes
index a3480e4..d592074 100644
--- a/python-pygraphviz.changes
+++ b/python-pygraphviz.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Fri Oct 24 16:52:44 UTC 2025 - Matej Cepl <mcepl@cepl.eu>
+
+- More gentle version of graphviz_14-0-0.patch, which doesn’t
+  change a SWIG include file, just the C generated one with the
+  minimal required change (bsc#1252488).
+
 -------------------------------------------------------------------
 Wed Oct 22 17:55:37 UTC 2025 - Matej Cepl <mcepl@cepl.eu>
 
diff --git a/python-pygraphviz.spec b/python-pygraphviz.spec
index 9dfcd7b..d5e7cb7 100644
--- a/python-pygraphviz.spec
+++ b/python-pygraphviz.spec
@@ -78,9 +78,6 @@ This package provides documentation and help files for %{name}
 %autosetup -p1 -n pygraphviz-%{version}
 cp %SOURCE1 examples
 
-# Remove generated C file to force regeneration from SWIG sources
-rm pygraphviz/graphviz_wrap.c
-
 %build
 export CFLAGS="%{optflags}"
 %if ! %{with doc}