diff --git a/data/json/vehicleparts/boards.json b/data/json/vehicleparts/boards.json
index 1a5c81ff9f76e..eb1e6e064af23 100644
--- a/data/json/vehicleparts/boards.json
+++ b/data/json/vehicleparts/boards.json
@@ -6,8 +6,8 @@
     "categories": [ "hull" ],
     "standard_symbols": true,
     "symbols": {
-      "horizontal_front": "T",
-      "horizontal_rear": "B",
+      "horizontal_front": "h",
+      "horizontal_rear": "h",
       "horizontal_2_front": "=",
       "horizontal_2_rear": "=",
       "vertical_left": "j",
diff --git a/data/json/vehicleparts/doors.json b/data/json/vehicleparts/doors.json
index 68233d2bf8d13..6dfbb2489e329 100644
--- a/data/json/vehicleparts/doors.json
+++ b/data/json/vehicleparts/doors.json
@@ -22,7 +22,7 @@
     },
     "size": 10,
     "symbol": "+",
-    "symbols": { "ne": "u", "nw": "y", "se": "b", "sw": "n", "vertical_left": "L", "vertical_right": "n", "front": "T", "rear": "B" },
+    "symbols": { "ne": "+", "nw": "+", "se": "+", "sw": "+", "vertical_left": "+", "vertical_right": "+", "front": "+", "rear": "+" },
     "type": "vehicle_part"
   },
   {
diff --git a/data/json/vehicleparts/windshields.json b/data/json/vehicleparts/windshields.json
index a317dd4e494e9..f1e96a603e435 100644
--- a/data/json/vehicleparts/windshields.json
+++ b/data/json/vehicleparts/windshields.json
@@ -16,9 +16,9 @@
       "vertical": "j",
       "vertical_left": "j",
       "vertical_right": "H",
-      "horizontal_front": "T",
+      "horizontal_front": "h",
       "horizontal_front_edge": "^",
-      "horizontal_rear": "B",
+      "horizontal_rear": "h",
       "horizontal_rear_edge": "="
     },
     "broken_color": "light_gray",
@@ -56,9 +56,9 @@
       "vertical": "j",
       "vertical_left": "j",
       "vertical_right": "H",
-      "horizontal_front": "T",
+      "horizontal_front": "h",
       "horizontal_front_edge": "^",
-      "horizontal_rear": "B",
+      "horizontal_rear": "h",
       "horizontal_rear_edge": "="
     },
     "broken_color": "light_gray",