diff --git a/include/X11/keysymdef.h b/include/X11/keysymdef.h
index 7bb6ebf3aa29c05ee9a1796cdd7a43b76473ec59..deb82d34ef6185cc4bca4a19ebb244d4e4d24b1c 100644
--- a/include/X11/keysymdef.h
+++ b/include/X11/keysymdef.h
@@ -414,12 +414,6 @@ SOFTWARE.
 #define XK_dead_belowcomma               0xfe6e
 #define XK_dead_currency                 0xfe6f
 
-/* extra dead elements for German T3 layout */
-#define XK_dead_lowline                  0xfe90
-#define XK_dead_aboveverticalline        0xfe91
-#define XK_dead_belowverticalline        0xfe92
-#define XK_dead_longsolidusoverlay       0xfe93
-
 /* dead vowels for universal syllable entry */
 #define XK_dead_a                        0xfe80
 #define XK_dead_A                        0xfe81