diff --git a/java_tools/enum_to_string/src/main/java/com/rusefi/VariableRegistry.java b/java_tools/enum_to_string/src/main/java/com/rusefi/VariableRegistry.java
index ecd3a25a4a..f4b788b394 100644
--- a/java_tools/enum_to_string/src/main/java/com/rusefi/VariableRegistry.java
+++ b/java_tools/enum_to_string/src/main/java/com/rusefi/VariableRegistry.java
@@ -269,6 +269,7 @@ public class VariableRegistry  {
         data.put(key, value);
     }
 
+    @Nullable
     public String get(Object key) {
         return data.get(key);
     }