diff --git a/sci-chemistry/xcrysden/files/xcrysden-1.6.2-disable-accum-buffer.patch b/sci-chemistry/xcrysden/files/xcrysden-1.6.2-disable-accum-buffer.patch
new file mode 100644
index 0000000000..bb11ec7678
--- /dev/null
+++ b/sci-chemistry/xcrysden/files/xcrysden-1.6.2-disable-accum-buffer.patch
@@ -0,0 +1,15 @@
+Disable OpenGL accumulation buffer for XWayland compatibility
+
+diff --git a/Tcl/custom-definitions b/Tcl/custom-definitions
+index 5267760..1221749 100644
+--- a/Tcl/custom-definitions
++++ b/Tcl/custom-definitions
+@@ -18,7 +18,7 @@
+ # $XCRYSDEN_TOPDIR/Tcl/toglOpt.tcl
+ # ------------------------------------------------------------------------
+ 
+-#set toglOpt(accum)  false 
++set toglOpt(accum)  false 
+ #set toglOpt(stereo) none
+ 
+ 
diff --git a/sci-chemistry/xcrysden/xcrysden-1.6.2-r2.ebuild b/sci-chemistry/xcrysden/xcrysden-1.6.2-r2.ebuild
index f07f2fce05..3a489076c4 100644
--- a/sci-chemistry/xcrysden/xcrysden-1.6.2-r2.ebuild
+++ b/sci-chemistry/xcrysden/xcrysden-1.6.2-r2.ebuild
@@ -35,6 +35,7 @@ PATCHES=(
 	"${FILESDIR}/${P}-Togl-lib.patch"
 	"${FILESDIR}/${P}-wrapper-paths.patch"
 	"${FILESDIR}/${P}-c23.patch"
+	"${FILESDIR}/${P}-disable-accum-buffer.patch"
 )
 
 src_prepare() {