diff --git a/0021-playground-driven-development/ep0022.xcworkspace/contents.xcworkspacedata b/0021-playground-driven-development/ep0021.xcworkspace/contents.xcworkspacedata
similarity index 100%
rename from 0021-playground-driven-development/ep0022.xcworkspace/contents.xcworkspacedata
rename to 0021-playground-driven-development/ep0021.xcworkspace/contents.xcworkspacedata
diff --git a/0021-playground-driven-development/ep0022.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/0021-playground-driven-development/ep0021.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
similarity index 100%
rename from 0021-playground-driven-development/ep0022.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
rename to 0021-playground-driven-development/ep0021.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist