diff --git a/we-atomic/src/main/kotlin/com/wavesenterprise/sdk/atomic/AtomicBroadcaster.kt b/we-atomic/src/main/kotlin/com/wavesenterprise/sdk/atomic/AtomicBroadcaster.kt
index 15cffcd9..a1efa2d4 100644
--- a/we-atomic/src/main/kotlin/com/wavesenterprise/sdk/atomic/AtomicBroadcaster.kt
+++ b/we-atomic/src/main/kotlin/com/wavesenterprise/sdk/atomic/AtomicBroadcaster.kt
@@ -12,7 +12,7 @@ class AtomicBroadcaster(
 ) {
     private val txService: TxService = atomicAwareNodeBlockingServiceFactory.txService()
 
-    fun <T> doInAtomic(block: () -> T): T? {
+    fun <T> doInAtomic(block: () -> T): T {
         atomicAwareContextManager.beginAtomic()
         try {
             val blockResult = block()