diff --git a/dev/tools/gen_keycodes/data/gtk_logical_name_mapping.json b/dev/tools/gen_keycodes/data/gtk_logical_name_mapping.json
index 1a2bd2b868..2c9b4c0a90 100644
--- a/dev/tools/gen_keycodes/data/gtk_logical_name_mapping.json
+++ b/dev/tools/gen_keycodes/data/gtk_logical_name_mapping.json
@@ -19,7 +19,7 @@
   "NumpadDecimal": ["KP_Period", "KP_Delete"],
   "NumpadEnter": ["KP_Enter"],
   "AltLeft": ["Alt_L"],
-  "AltRight": ["Alt_R", "ISO_Level3_Shift"],
+  "AltRight": ["Alt_R"],
   "ArrowDown": ["Down"],
   "ArrowLeft": ["Left"],
   "ArrowRight": ["Right"],
diff --git a/dev/tools/gen_keycodes/data/logical_key_data.g.json b/dev/tools/gen_keycodes/data/logical_key_data.g.json
index 289a3b7453..6442730bfd 100644
--- a/dev/tools/gen_keycodes/data/logical_key_data.g.json
+++ b/dev/tools/gen_keycodes/data/logical_key_data.g.json
@@ -1663,6 +1663,14 @@
     "names": {
       "web": [
         "AltGraph"
+      ],
+      "gtk": [
+        "ISO_Level3_Shift"
+      ]
+    },
+    "values": {
+      "gtk": [
+        65027
       ]
     }
   },
@@ -8113,8 +8121,7 @@
         "AltRight"
       ],
       "gtk": [
-        "Alt_R",
-        "ISO_Level3_Shift"
+        "Alt_R"
       ],
       "windows": [
         "RMENU"
@@ -8134,8 +8141,7 @@
         230
       ],
       "gtk": [
-        65514,
-        65027
+        65514
       ],
       "windows": [
         165
diff --git a/engine/src/flutter/shell/platform/linux/key_mapping.g.cc b/engine/src/flutter/shell/platform/linux/key_mapping.g.cc
index a5a7643930..9770bc7a5b 100644
--- a/engine/src/flutter/shell/platform/linux/key_mapping.g.cc
+++ b/engine/src/flutter/shell/platform/linux/key_mapping.g.cc
@@ -246,7 +246,7 @@ std::map<uint64_t, uint64_t> gtk_keyval_to_logical_key_map = {
     {0x0000fd1b, 0x00100000406},  // 3270_ExSelect
     {0x0000fd1d, 0x00100000608},  // 3270_PrintScreen
     {0x0000fd1e, 0x0010000000d},  // 3270_Enter
-    {0x0000fe03, 0x00200000105},  // ISO_Level3_Shift
+    {0x0000fe03, 0x00100000103},  // ISO_Level3_Shift
     {0x0000fe08, 0x00100000709},  // ISO_Next_Group
     {0x0000fe0a, 0x0010000070a},  // ISO_Prev_Group
     {0x0000fe0c, 0x00100000707},  // ISO_First_Group
diff --git a/packages/flutter/lib/src/services/keyboard_maps.g.dart b/packages/flutter/lib/src/services/keyboard_maps.g.dart
index 81f6a22634..54f4906679 100644
--- a/packages/flutter/lib/src/services/keyboard_maps.g.dart
+++ b/packages/flutter/lib/src/services/keyboard_maps.g.dart
@@ -1753,7 +1753,7 @@ const Map<int, LogicalKeyboardKey> kGtkToLogicalKey = <int, LogicalKeyboardKey>{
   64795: LogicalKeyboardKey.exSel,
   64797: LogicalKeyboardKey.printScreen,
   64798: LogicalKeyboardKey.enter,
-  65027: LogicalKeyboardKey.altRight,
+  65027: LogicalKeyboardKey.altGraph,
   65032: LogicalKeyboardKey.groupNext,
   65034: LogicalKeyboardKey.groupPrevious,
   65036: LogicalKeyboardKey.groupFirst,