diff --git a/devops-service/lib/executors/server_executor/server_operation_result.rb b/devops-service/lib/executors/server_executor/server_operation_result.rb
index 5c015f1..b410780 100644
--- a/devops-service/lib/executors/server_executor/server_operation_result.rb
+++ b/devops-service/lib/executors/server_executor/server_operation_result.rb
@@ -17,7 +17,7 @@ module Devops
       )
 
       def one_of_bootstrap_errors?
-        [:server_bootstrap_fail, :server_not_in_chef_nodes, :server_bootstrap_unknown_error].include?(reason)
+        [:server_bootstrap_fail, :server_not_in_chef_nodes, :server_bootstrap_unknown_error, :unknown_error].include?(reason)
       end
 
     end
diff --git a/devops-service/workers/stack_bootstrap_worker.rb b/devops-service/workers/stack_bootstrap_worker.rb
index aac12cc..59d1f55 100644
--- a/devops-service/workers/stack_bootstrap_worker.rb
+++ b/devops-service/workers/stack_bootstrap_worker.rb
@@ -48,7 +48,7 @@ class StackBootstrapWorker < Worker
     # move try_rollback to stack executor
     if bootstrap_result.bootstrap_error?
       if options[:skip_rollback]
-        puts_and_flush "\nSkip rollback because of skip_rollback option set to true."
+        puts_and_flush "\nSkip rollback because skip_rollback option set to true."
       else
         rollback_stack!
       end