diff --git a/pkg/services/rpcsrv/client_test.go b/pkg/services/rpcsrv/client_test.go
index cd4b00a889..38fd101e4a 100644
--- a/pkg/services/rpcsrv/client_test.go
+++ b/pkg/services/rpcsrv/client_test.go
@@ -2212,6 +2212,10 @@ func TestWSClient_SubscriptionsCompat(t *testing.T) {
 
 		// Accept the next block and wait for events.
 		require.NoError(t, chain.AddBlock(b))
+		// Blockchain's events channel is not buffered, and thus, by adding one more extra block
+		// we're ensuring that the previous block event receiving was successfully handled by Blockchain's
+		// notificationDispatcher loop. Once we're sure in that, we may start to check the actual notifications.
+		require.NoError(t, chain.AddBlock(b))
 		assert.Eventually(t, func() bool {
 			lock.RLock()
 			defer lock.RUnlock()