diff --git a/examples/shipping/booking/logging.go b/examples/shipping/booking/logging.go
index 85c74ae..3a04576 100644
--- a/examples/shipping/booking/logging.go
+++ b/examples/shipping/booking/logging.go
@@ -13,7 +13,7 @@
 	Service
 }
 
-// NewLoggingService ...
+// NewLoggingService returns a new instance of a logging Service.
 func NewLoggingService(logger log.Logger, s Service) Service {
 	return &loggingService{logger, s}
 }
diff --git a/examples/shipping/handling/logging.go b/examples/shipping/handling/logging.go
index 50af517..26457ac 100644
--- a/examples/shipping/handling/logging.go
+++ b/examples/shipping/handling/logging.go
@@ -14,7 +14,7 @@
 	Service
 }
 
-// NewLoggingService ...
+// NewLoggingService returns a new instance of a logging Service.
 func NewLoggingService(logger log.Logger, s Service) Service {
 	return &loggingService{logger, s}
 }
diff --git a/examples/shipping/routing/proxying.go b/examples/shipping/routing/proxying.go
index 4365669..f9e536a 100644
--- a/examples/shipping/routing/proxying.go
+++ b/examples/shipping/routing/proxying.go
@@ -52,10 +52,10 @@
 	return itineraries
 }
 
-// ServiceMiddleware ...
+// ServiceMiddleware defines a middleware for a routing service.
 type ServiceMiddleware func(Service) Service
 
-// NewProxyingMiddleware ...
+// NewProxyingMiddleware returns a new instance of a proxying middleware.
 func NewProxyingMiddleware(proxyURL string, ctx context.Context) ServiceMiddleware {
 	return func(next Service) Service {
 		var e endpoint.Endpoint
diff --git a/examples/shipping/tracking/logging.go b/examples/shipping/tracking/logging.go
index c5dfedb..584aeaa 100644
--- a/examples/shipping/tracking/logging.go
+++ b/examples/shipping/tracking/logging.go
@@ -11,7 +11,7 @@
 	Service
 }
 
-// NewLoggingService ...
+// NewLoggingService returns a new instance of a logging Service.
 func NewLoggingService(logger log.Logger, s Service) Service {
 	return &loggingService{logger, s}
 }