diff --git a/config/checkdoc/main.go b/config/checkdoc/main.go
index 5d136de3..65853b17 100644
--- a/config/checkdoc/main.go
+++ b/config/checkdoc/main.go
@@ -199,7 +199,9 @@ func checkConfiguration(filename, configType string, lineNum int) bool {
 func setupTempDir() func() {
 	if tempDir != "" {
 		_ = os.MkdirAll(tempDir, 0700)
-		return func() {}
+		return func() {
+			// nothing to do
+		}
 	}
 	tempDir, _ = os.MkdirTemp("", "checkdoc*")
 	return func() {
diff --git a/main.go b/main.go
index d3fa00a9..cb75df1d 100644
--- a/main.go
+++ b/main.go
@@ -373,7 +373,9 @@ func openProfile(c *config.Config, profileName string) (profile *config.Profile,
 	}
 
 	if cleanup == nil {
-		cleanup = func() {}
+		cleanup = func() {
+			// nothing to do
+		}
 	}
 	return
 }
diff --git a/schedule/handler_crond.go b/schedule/handler_crond.go
index cde0863a..07bdff70 100644
--- a/schedule/handler_crond.go
+++ b/schedule/handler_crond.go
@@ -32,7 +32,9 @@ func (h *HandlerCrond) Init() error {
 }
 
 // Close does nothing with crond
-func (h *HandlerCrond) Close() {}
+func (h *HandlerCrond) Close() {
+	// nothing to do
+}
 
 func (h *HandlerCrond) ParseSchedules(schedules []string) ([]*calendar.Event, error) {
 	return parseSchedules(schedules)
@@ -42,12 +44,12 @@ func (h *HandlerCrond) DisplayParsedSchedules(command string, events []*calendar
 	displayParsedSchedules(command, events)
 }
 
-// DisplaySchedules does nothing with launchd
+// DisplaySchedules does nothing with crond
 func (h *HandlerCrond) DisplaySchedules(command string, schedules []string) error {
 	return nil
 }
 
-// DisplayStatus does nothing with launchd
+// DisplayStatus does nothing with crond
 func (h *HandlerCrond) DisplayStatus(profileName string) error {
 	return nil
 }
diff --git a/schedule/handler_darwin.go b/schedule/handler_darwin.go
index 610063f7..bf9266c3 100644
--- a/schedule/handler_darwin.go
+++ b/schedule/handler_darwin.go
@@ -86,7 +86,9 @@ func (h *HandlerLaunchd) Init() error {
 }
 
 // Close does nothing with launchd
-func (h *HandlerLaunchd) Close() {}
+func (h *HandlerLaunchd) Close() {
+	// nothing to do
+}
 
 func (h *HandlerLaunchd) ParseSchedules(schedules []string) ([]*calendar.Event, error) {
 	return parseSchedules(schedules)
@@ -101,6 +103,7 @@ func (h *HandlerLaunchd) DisplaySchedules(command string, schedules []string) er
 	return nil
 }
 
+// DisplayStatus does nothing with launchd
 func (h *HandlerLaunchd) DisplayStatus(profileName string) error {
 	return nil
 }
diff --git a/schedule/handler_systemd.go b/schedule/handler_systemd.go
index 9a3ea409..621d4427 100644
--- a/schedule/handler_systemd.go
+++ b/schedule/handler_systemd.go
@@ -61,7 +61,9 @@ func (h *HandlerSystemd) Init() error {
 }
 
 // Close does nothing with systemd
-func (h *HandlerSystemd) Close() {}
+func (h *HandlerSystemd) Close() {
+	// nothing to do
+}
 
 // ParseSchedules always returns nil on systemd
 func (h *HandlerSystemd) ParseSchedules(schedules []string) ([]*calendar.Event, error) {