diff --git a/java_tools/configuration_definition/src/main/java/com/rusefi/EnumPair.java b/java_tools/configuration_definition/src/main/java/com/rusefi/EnumPair.java
index 32b7437451..64dcf1ff2e 100644
--- a/java_tools/configuration_definition/src/main/java/com/rusefi/EnumPair.java
+++ b/java_tools/configuration_definition/src/main/java/com/rusefi/EnumPair.java
@@ -16,4 +16,10 @@ public class EnumPair {
     public String getArrayForm() {
         return arrayForm;
     }
+
+    public boolean isEmpty() {
+        if (arrayForm.isEmpty() ^ keyValueForm.isEmpty())
+            throw new IllegalStateException("Expecting either both empty or both not empty [" + arrayForm + "][" + keyValueForm + "]");
+        return arrayForm.isEmpty();
+    }
 }
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 7478f40291..0056bb35de 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
@@ -81,7 +81,7 @@ public class PinoutLogic {
             String nothingName = namePinType.getNothingName();
             EnumsReader.EnumState enumList = enumsReader.getEnums().get(pinType);
             EnumPair pair = enumToOptionsList(nothingName, enumList, kv.getValue());
-            if (pair.getArrayForm().length() > 0) {
+            if (!pair.isEmpty()) {
                 // we seem to be here if specific pin category like switch_inputs has no pins
                 parseState.addDefinition(registry, outputEnumName + KEY_VALUE_FORMAT_ENUM, pair.getKeyValueForm(), Definition.OverwritePolicy.IgnoreNew);
             }