diff --git a/external/lcms2/0002-mark-more-const.patch.1 b/external/lcms2/0002-mark-more-const.patch.1
new file mode 100644
index 000000000000..b07ac9aa3d8d
--- /dev/null
+++ b/external/lcms2/0002-mark-more-const.patch.1
@@ -0,0 +1,12 @@
+diff -ur lcms2.org/src/cmscnvrt.c lcms2/src/cmscnvrt.c
+--- lcms2.org/src/cmscnvrt.c	2025-07-25 11:19:46.585033759 +0200
++++ lcms2/src/cmscnvrt.c	2025-07-25 11:19:55.829564148 +0200
+@@ -79,7 +79,7 @@
+ 
+ 
+ // Built-in intents
+-static cmsIntentsList DefaultIntents[] = {
++static const cmsIntentsList DefaultIntents[] = {
+ 
+     { INTENT_PERCEPTUAL,                            "Perceptual",                                   DefaultICCintents,            &DefaultIntents[1] },
+     { INTENT_RELATIVE_COLORIMETRIC,                 "Relative colorimetric",                        DefaultICCintents,            &DefaultIntents[2] },
diff --git a/external/lcms2/UnpackedTarball_lcms2.mk b/external/lcms2/UnpackedTarball_lcms2.mk
index e6cf51f3911d..09799e5af362 100644
--- a/external/lcms2/UnpackedTarball_lcms2.mk
+++ b/external/lcms2/UnpackedTarball_lcms2.mk
@@ -26,6 +26,7 @@ endif
 $(eval $(call gb_UnpackedTarball_add_patches,lcms2,\
 	external/lcms2/lcms2-2.4-windows.patch \
 	external/lcms2/0001-Mark-some-tables-as-const.patch.1 \
+	external/lcms2/0002-mark-more-const.patch.1 \
 ))
 
 # vim: set noet sw=4 ts=4: