diff --git a/firmware/config/boards/hellen/uaefi121/compile_firmware.sh b/firmware/config/boards/hellen/uaefi121/compile_firmware.sh
index 634105dee6..ea78abc427 100755
--- a/firmware/config/boards/hellen/uaefi121/compile_firmware.sh
+++ b/firmware/config/boards/hellen/uaefi121/compile_firmware.sh
@@ -1,2 +1,2 @@
 #!/usr/bin/env bash
-cd ../../../.. && bash bin/compile.sh config/boards/hellen/uaefi/meta-info.env
+cd ../../../.. && bash bin/compile.sh config/boards/hellen/uaefi121/meta-info.env
diff --git a/firmware/config/boards/hellen/uaefi121/connectors/uaefi121.yaml b/firmware/config/boards/hellen/uaefi121/connectors/uaefi121.yaml
index 64709b3a17..cfc0949ca8 100644
--- a/firmware/config/boards/hellen/uaefi121/connectors/uaefi121.yaml
+++ b/firmware/config/boards/hellen/uaefi121/connectors/uaefi121.yaml
@@ -268,7 +268,7 @@ pins:
 
   - pin: 43a
     class: outputs
-    mega: MM100_LED2_GREEN
+    meta: MM100_LED2_GREEN
     ts_name: ___ High Side Output
     function: High-side high current output
 
@@ -500,14 +500,14 @@ pins:
 
   - pin: 86a
     ts_name: ___ LS5_HOT
-    mega: MM100_IGN7
+    meta: MM100_IGN7
     class: outputs
     function: Low-Side 5 always hot / relay capable output
     type: ls
 
   - pin: 87a
     ts_name: ___ LS6_HOT
-    mega: MM100_IGN8
+    meta: MM100_IGN8
     class: outputs
     function: Low-Side 6 always hot / relay capable output
     type: ls
diff --git a/java_tools/configuration_definition/src/main/java/com/rusefi/pinout/PinoutLogic.java b/java_tools/configuration_definition/src/main/java/com/rusefi/pinout/PinoutLogic.java
index 390987af57..7cace05e99 100644
--- a/java_tools/configuration_definition/src/main/java/com/rusefi/pinout/PinoutLogic.java
+++ b/java_tools/configuration_definition/src/main/java/com/rusefi/pinout/PinoutLogic.java
@@ -22,6 +22,13 @@ public class PinoutLogic {
 
     private static final String NONE = "NONE";
     private static final String QUOTED_NONE = quote(NONE);
+    private static final String ID = "id";
+    private static final String META = "meta";
+    private static final String CLASS = "class";
+    private static final String PIN = "pin";
+    private static final String TS_NAME = "ts_name";
+    private static final String FUNCTION = "function";
+    private static final String TYPE = "type";
 
     private final ArrayList<PinState> globalList = new ArrayList<>();
     private final Map</*id*/String, /*tsName*/String> tsNameById = new TreeMap<>();
@@ -146,8 +153,9 @@ public class PinoutLogic {
         log.info("Got from " + yamlFile + ": " + data);
         Objects.requireNonNull(data, "data");
         for (Map<String, Object> pin : data) {
-            Object pinId = pin.get("id");
-            Object metaAsObject = pin.get("meta");
+            validateKeys(pin.keySet());
+            Object pinId = pin.get(ID);
+            Object metaAsObject = pin.get(META);
             if (metaAsObject != null && !(metaAsObject instanceof String))
                 throw new IllegalStateException("[" + metaAsObject + "] meta could only be a string for " + pinId);
             String meta = (String) metaAsObject;
@@ -166,15 +174,15 @@ public class PinoutLogic {
             } else {
                 headerValue = (pinId instanceof String) ? (String) pinId : null;
             }
-            Object pinClass = pin.get("class");
-            Object pinName = pin.get("pin");
-            Object pinTsName = pin.get("ts_name");
-            Object pinFunction = pin.get("function");
+            Object pinClass = pin.get(CLASS);
+            Object pinName = pin.get(PIN);
+            Object pinTsName = pin.get(TS_NAME);
+            Object pinFunction = pin.get(FUNCTION);
             if (pinTsName == null && pinFunction != null)
                 pinTsName = pinFunction;
-            Object pinType = pin.get("type");
+            Object pinType = pin.get(TYPE);
             if (pinId == null || pinClass == null || pinTsName == null) {
-                log.info("Skipping incomplete section " + pinId + "/" + pinClass + "/" + pinTsName);
+                log.info("Skipping incomplete section pinId=" + pinId + "/pinClass=" + pinClass + "/pinTsName=" + pinTsName);
                 continue;
             }
             if (pinName != null) {
@@ -213,6 +221,14 @@ public class PinoutLogic {
         }
     }
 
+    private static void validateKeys(Set<String> key) {
+        Set<String> copy = new TreeSet<>(String.CASE_INSENSITIVE_ORDER);
+        copy.addAll(key);
+        copy.removeAll(Arrays.asList(ID, CLASS, META, FUNCTION, TS_NAME, PIN, TYPE, "color"));
+        if (!copy.isEmpty())
+            throw new IllegalStateException("Unexpected key(s): " + copy);
+    }
+
     private static String applyMetaMapping(Map<String, String> metaMapping, String id) {
         return metaMapping.getOrDefault(id, id);
     }