diff --git a/codegen/example/templates/client_endpoint_init.go.tpl b/codegen/example/templates/client_endpoint_init.go.tpl
index e5ae63d491..02353b8c76 100644
--- a/codegen/example/templates/client_endpoint_init.go.tpl
+++ b/codegen/example/templates/client_endpoint_init.go.tpl
@@ -31,7 +31,7 @@
 		}
 	}
 	if err != nil {
-		if err == flag.ErrHelp {
+		if errors.Is(err, flag.ErrHelp) {
 			os.Exit(0)
 		}
 		fmt.Fprintln(os.Stderr, err.Error())
diff --git a/codegen/example/testdata/client-no-server.golden b/codegen/example/testdata/client-no-server.golden
index 938a380cab..4bed82edee 100644
--- a/codegen/example/testdata/client-no-server.golden
+++ b/codegen/example/testdata/client-no-server.golden
@@ -61,7 +61,7 @@ func main() {
 		}
 	}
 	if err != nil {
-		if err == flag.ErrHelp {
+		if errors.Is(err, flag.ErrHelp) {
 			os.Exit(0)
 		}
 		fmt.Fprintln(os.Stderr, err.Error())
diff --git a/codegen/example/testdata/client-single-server-multiple-hosts-with-variables.golden b/codegen/example/testdata/client-single-server-multiple-hosts-with-variables.golden
index b36af674e6..bb0df699fc 100644
--- a/codegen/example/testdata/client-single-server-multiple-hosts-with-variables.golden
+++ b/codegen/example/testdata/client-single-server-multiple-hosts-with-variables.golden
@@ -80,7 +80,7 @@ func main() {
 		}
 	}
 	if err != nil {
-		if err == flag.ErrHelp {
+		if errors.Is(err, flag.ErrHelp) {
 			os.Exit(0)
 		}
 		fmt.Fprintln(os.Stderr, err.Error())
diff --git a/codegen/example/testdata/client-single-server-multiple-hosts.golden b/codegen/example/testdata/client-single-server-multiple-hosts.golden
index 0e6730a575..efb2085ef0 100644
--- a/codegen/example/testdata/client-single-server-multiple-hosts.golden
+++ b/codegen/example/testdata/client-single-server-multiple-hosts.golden
@@ -61,7 +61,7 @@ func main() {
 		}
 	}
 	if err != nil {
-		if err == flag.ErrHelp {
+		if errors.Is(err, flag.ErrHelp) {
 			os.Exit(0)
 		}
 		fmt.Fprintln(os.Stderr, err.Error())
diff --git a/codegen/example/testdata/client-single-server-single-host-with-variables.golden b/codegen/example/testdata/client-single-server-single-host-with-variables.golden
index 060a82e459..4fd6755bc6 100644
--- a/codegen/example/testdata/client-single-server-single-host-with-variables.golden
+++ b/codegen/example/testdata/client-single-server-single-host-with-variables.golden
@@ -77,7 +77,7 @@ func main() {
 		}
 	}
 	if err != nil {
-		if err == flag.ErrHelp {
+		if errors.Is(err, flag.ErrHelp) {
 			os.Exit(0)
 		}
 		fmt.Fprintln(os.Stderr, err.Error())
diff --git a/codegen/example/testdata/client-single-server-single-host.golden b/codegen/example/testdata/client-single-server-single-host.golden
index f6b0fc4520..fadb54b2b9 100644
--- a/codegen/example/testdata/client-single-server-single-host.golden
+++ b/codegen/example/testdata/client-single-server-single-host.golden
@@ -61,7 +61,7 @@ func main() {
 		}
 	}
 	if err != nil {
-		if err == flag.ErrHelp {
+		if errors.Is(err, flag.ErrHelp) {
 			os.Exit(0)
 		}
 		fmt.Fprintln(os.Stderr, err.Error())