diff --git a/packages/mesh-contract/src/vesting/aiken-workspace/lib/vesting/types.ak b/packages/mesh-contract/src/vesting/aiken-workspace/lib/vesting/types.ak
index a189c93bb..386218b2b 100644
--- a/packages/mesh-contract/src/vesting/aiken-workspace/lib/vesting/types.ak
+++ b/packages/mesh-contract/src/vesting/aiken-workspace/lib/vesting/types.ak
@@ -1,5 +1,5 @@
 pub type VestingDatum {
-  /// POSIX time in second, e.g. 1672843961000
+  /// POSIX time in millisecond, e.g. 1672843961000
   lock_until: Int,
   /// Owner's credentials
   owner: ByteArray,