diff --git a/cmd/authwrapper/main.go b/cmd/authwrapper/main.go
index dcf3473..7ec3fbf 100644
--- a/cmd/authwrapper/main.go
+++ b/cmd/authwrapper/main.go
@@ -59,7 +59,7 @@ func main() {
 		log.Fatalf("Failed to list sshAgent keys: %v", err)
 	}
 
-	if config.AuthWrapperQuiet == "" {
+	if config.AuthWrapperQuiet == false {
 		fmt.Fprintf(os.Stderr, "Loaded keys:\n")
 
 		for _, key := range keyList {
@@ -72,7 +72,7 @@ func main() {
 		log.Fatalf("runCommandWithSSHAgent: %v", err)
 	}
 
-	if config.AuthWrapperQuiet == "" {
+	if config.AuthWrapperQuiet == false {
 		fmt.Fprintf(os.Stderr, "exit code: %v\n", exitCode)
 	}
 }
diff --git a/cmd/authwrapper/setup.go b/cmd/authwrapper/setup.go
index 254db17..b6f761d 100644
--- a/cmd/authwrapper/setup.go
+++ b/cmd/authwrapper/setup.go
@@ -30,7 +30,7 @@ type Config struct {
 	SSHCaAuthorizedKeysPath string
 	SSHSigningServerAddress string
 	SSHAgentSocket          string
-	AuthWrapperQuiet        string
+	AuthWrapperQuiet        bool
 }
 
 var principalsFlag = flag.String("principals", "", "requested principals")
@@ -39,6 +39,8 @@ func parseEnvironment() (*Config, error) {
 	flag.Parse()
 	args := flag.Args()
 
+	_, isAuthWrapperQuiet := os.LookupEnv("AUTH_WRAPPER_QUIET")
+
 	config := &Config{
 		Command:                 os.Getenv("WRAP_COMMAND"),
 		Args:                    args,
@@ -52,7 +54,7 @@ func parseEnvironment() (*Config, error) {
 		SSHCaAuthorizedKeysPath: os.Getenv("SSH_CA_AUTHORIZED_KEYS_PATH"),
 		SSHSigningServerAddress: os.Getenv("SSH_SIGNING_SERVER_LISTEN_ADDRESS"),
 		SSHAgentSocket:          os.Getenv("SSH_AUTH_SOCK"),
-		AuthWrapperQuiet:        os.Getenv("AUTH_WRAPPER_QUIET"),
+		AuthWrapperQuiet:        isAuthWrapperQuiet,
 	}
 	os.Unsetenv("WRAP_COMMAND")
 	os.Unsetenv("SSH_KEY_PATH")
diff --git a/cmd/authwrapper/utils.go b/cmd/authwrapper/utils.go
index 5965bd6..0693a8b 100644
--- a/cmd/authwrapper/utils.go
+++ b/cmd/authwrapper/utils.go
@@ -29,7 +29,15 @@ func runCommandWithSSHAgent(agent agent.ExtendedAgent, command string, args []st
 	if err != nil {
 		return 255, fmt.Errorf("Failed to start ssh agent server: %v", err)
 	}
-	os.Setenv("SSH_AUTH_SOCK", sshAuthSock)
+
+	// Hide this behind quiet until the Go standard library has support for the new "agentc" extension in Open-SSH
+	config, err := parseEnvironment()
+	if err != nil {
+		log.Fatalf(": %v", err)
+	}
+	if config.AuthWrapperQuiet == false {
+		os.Setenv("SSH_AUTH_SOCK", sshAuthSock)
+	}
 
 	// Do string replacement for SSH_AUTH_SOCK
 	for i, arg := range args {