diff --git a/fsm/common/src/commonMain/kotlin/dev/inmo/micro_utils/fsm/common/UpdatableStatesMachine.kt b/fsm/common/src/commonMain/kotlin/dev/inmo/micro_utils/fsm/common/UpdatableStatesMachine.kt
index 76fccd49c88..8d5a53f41bb 100644
--- a/fsm/common/src/commonMain/kotlin/dev/inmo/micro_utils/fsm/common/UpdatableStatesMachine.kt
+++ b/fsm/common/src/commonMain/kotlin/dev/inmo/micro_utils/fsm/common/UpdatableStatesMachine.kt
@@ -52,7 +52,7 @@ open class DefaultUpdatableStatesMachine<T : State>(
         }
     }
 
-    protected suspend fun compare(previous: Optional<T>, new: T): Boolean = previous.dataOrNull() != new
+    protected open suspend fun compare(previous: Optional<T>, new: T): Boolean = previous.dataOrNull() != new
 
     override suspend fun updateChain(currentState: T, newState: T) {
         statesManager.update(currentState, newState)