diff --git a/var/spack/repos/builtin/packages/cgns/cgns-4.5-tk-private.patch b/var/spack/repos/builtin/packages/cgns/cgns-4.5-tk-private.patch
new file mode 100644
index 00000000000..c61fec1a2e8
--- /dev/null
+++ b/var/spack/repos/builtin/packages/cgns/cgns-4.5-tk-private.patch
@@ -0,0 +1,13 @@
+diff --git a/src/cgnstools/tkogl/tkogl.c b/src/cgnstools/tkogl/tkogl.c
+index 506599d..71b4fb8 100644
+--- a/src/cgnstools/tkogl/tkogl.c
++++ b/src/cgnstools/tkogl/tkogl.c
+@@ -25,7 +25,7 @@
+ #if ! defined(__WIN32__) && ! defined(_WIN32)
+ /* For TkWmAddToColormapWindows. */
+ #define _TKPORT /* Typical installations cannot find tkPort.h. */
+-#include <tk-private/generic/tkInt.h>
++#include <tkInt.h>
+ #endif
+
+ #ifndef CONST
diff --git a/var/spack/repos/builtin/packages/cgns/package.py b/var/spack/repos/builtin/packages/cgns/package.py
index ed034cdbfd2..96415ad60e1 100644
--- a/var/spack/repos/builtin/packages/cgns/package.py
+++ b/var/spack/repos/builtin/packages/cgns/package.py
@@ -81,6 +81,8 @@ class Cgns(CMakePackage):
     # copied from https://github.com/CGNS/CGNS/pull/757
     # (adjusted an include from tk-private/generic/tkInt.h to tkInt.h)
     patch("gcc14.patch", when="@:4.4.0 %gcc@14:")
+    # "wrong" include for spack (tk-private) from the patch above made it into the official version
+    patch("cgns-4.5-tk-private.patch", when="@4.5.0")
 
     def cmake_args(self):
         spec = self.spec