diff --git a/guacamole-common-js/src/main/webapp/modules/Keyboard.js b/guacamole-common-js/src/main/webapp/modules/Keyboard.js
index e41b03ed5..0480d4dd0 100644
--- a/guacamole-common-js/src/main/webapp/modules/Keyboard.js
+++ b/guacamole-common-js/src/main/webapp/modules/Keyboard.js
@@ -459,22 +459,6 @@ Guacamole.Keyboard = function(element) {
         "Compose": [0xFF20],
         "Control": [0xFFE3, 0xFFE3, 0xFFE4],
         "ContextMenu": [0xFF67],
-        "DeadGrave": [0xFE50],
-        "DeadAcute": [0xFE51],
-        "DeadCircumflex": [0xFE52],
-        "DeadTilde": [0xFE53],
-        "DeadMacron": [0xFE54],
-        "DeadBreve": [0xFE55],
-        "DeadAboveDot": [0xFE56],
-        "DeadUmlaut": [0xFE57],
-        "DeadAboveRing": [0xFE58],
-        "DeadDoubleacute": [0xFE59],
-        "DeadCaron": [0xFE5A],
-        "DeadCedilla": [0xFE5B],
-        "DeadOgonek": [0xFE5C],
-        "DeadIota": [0xFE5D],
-        "DeadVoicedSound": [0xFE5E],
-        "DeadSemivoicedSound": [0xFE5F],
         "Delete": [0xFFFF],
         "Down": [0xFF54],
         "End": [0xFF57],