diff --git a/src/main/kotlin/mdnet/base/Constants.kt b/src/main/kotlin/mdnet/base/Constants.kt
index 4160745..7f4697c 100644
--- a/src/main/kotlin/mdnet/base/Constants.kt
+++ b/src/main/kotlin/mdnet/base/Constants.kt
@@ -22,7 +22,8 @@ import java.time.Duration
 
 object Constants {
     const val CLIENT_BUILD = 16
-    val MAX_AGE_CACHE: Duration = Duration.ofDays(14)
+
+    @JvmField val MAX_AGE_CACHE: Duration = Duration.ofDays(14)
 
     const val MAX_READ_TIME_SECONDS = 300
     const val MAX_WRITE_TIME_SECONDS = 60