diff --git a/extended-persistence/src/main/kotlin/net/aquadc/persistence/extended/partial.kt b/extended-persistence/src/main/kotlin/net/aquadc/persistence/extended/partial.kt
index 7dddcf9a..8d32e144 100644
--- a/extended-persistence/src/main/kotlin/net/aquadc/persistence/extended/partial.kt
+++ b/extended-persistence/src/main/kotlin/net/aquadc/persistence/extended/partial.kt
@@ -24,7 +24,7 @@ import kotlin.contracts.InvocationKind
 import kotlin.contracts.contract
 
 
-private val EmptyArray = emptyArray<Any?>()
+@JvmField @JvmSynthetic internal val EmptyArray = emptyArray<Any?>()
 fun <SCH : Schema<SCH>> partial(schema: SCH): DataType.NotNull.Partial<PartialStruct<SCH>, SCH> =
         object : DataType.NotNull.Partial<PartialStruct<SCH>, SCH>(schema) {
 
diff --git a/persistence/src/main/kotlin/net/aquadc/persistence/struct/schema.kt b/persistence/src/main/kotlin/net/aquadc/persistence/struct/schema.kt
index b4d0f779..8c8194c9 100644
--- a/persistence/src/main/kotlin/net/aquadc/persistence/struct/schema.kt
+++ b/persistence/src/main/kotlin/net/aquadc/persistence/struct/schema.kt
@@ -58,7 +58,7 @@ abstract class Schema<SELF : Schema<SELF>> : DataType.NotNull.Partial<Struct<SEL
     @JvmSynthetic internal fun tmpFields() =
             tmpFields ?: throw IllegalStateException("schema `${javaClass.simpleName}` is already initialized")
 
-    private var mutableFieldBits = 0L
+    @JvmField @JvmSynthetic internal var mutableFieldBits = 0L
 
     /** A set of all fields of [this] [Schema]. */
     val allFieldSet: FieldSet<SELF, FieldDef<SELF, *, *>>