diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/config/ObservedConfigValue.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/config/ObservedConfigValue.kt
index 6f8caa5e4..a2a97bfa9 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/config/ObservedConfigValue.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/config/ObservedConfigValue.kt
@@ -2,12 +2,13 @@ package ru.dbotthepony.mc.otm.config
 
 import net.minecraftforge.common.ForgeConfigSpec.ConfigValue
 import org.apache.logging.log4j.LogManager
+import ru.dbotthepony.mc.otm.core.GetterSetter
 import java.util.function.Consumer
 import java.util.function.Supplier
 import kotlin.properties.ReadWriteProperty
 import kotlin.reflect.KProperty
 
-abstract class ObservedConfigValue<V : Any>(val parent: ConfigValue<String>) : ReadWriteProperty<Any, V>, Supplier<V>, Consumer<V> {
+abstract class ObservedConfigValue<V : Any>(val parent: ConfigValue<String>) : GetterSetter<V> {
 	var rawValue: String by parent
 	private var observedValue: String? = null
 	private var cachedValue: V? = null
@@ -43,7 +44,7 @@ abstract class ObservedConfigValue<V : Any>(val parent: ConfigValue<String>) : R
 		return cachedValue ?: throw ConcurrentModificationException()
 	}
 
-	override fun getValue(thisRef: Any, property: KProperty<*>): V {
+	override fun getValue(thisRef: Any?, property: KProperty<*>): V {
 		return get()
 	}
 
@@ -64,7 +65,7 @@ abstract class ObservedConfigValue<V : Any>(val parent: ConfigValue<String>) : R
 		}
 	}
 
-	override fun setValue(thisRef: Any, property: KProperty<*>, value: V) {
+	override fun setValue(thisRef: Any?, property: KProperty<*>, value: V) {
 		accept(value)
 	}