diff --git a/concurrency/basic_channel_error_handling/main.go b/channel/basic_channel_error_handling/main.go
similarity index 100%
rename from concurrency/basic_channel_error_handling/main.go
rename to channel/basic_channel_error_handling/main.go
diff --git a/master_concurrent_go/ch01/main.go b/concurrency/concurrency_in_go/main.go
similarity index 100%
rename from master_concurrent_go/ch01/main.go
rename to concurrency/concurrency_in_go/main.go