diff --git a/common/protocol/tls/cert/.gitignore b/common/protocol/tls/cert/.gitignore
index 612424a3..b8987f0b 100644
--- a/common/protocol/tls/cert/.gitignore
+++ b/common/protocol/tls/cert/.gitignore
@@ -1 +1,2 @@
-*.pem
\ No newline at end of file
+*.crt
+*.key
\ No newline at end of file
diff --git a/common/protocol/tls/cert/cert_test.go b/common/protocol/tls/cert/cert_test.go
index e06e61d7..4245f3d6 100644
--- a/common/protocol/tls/cert/cert_test.go
+++ b/common/protocol/tls/cert/cert_test.go
@@ -78,9 +78,9 @@ func printJSON(certificate *Certificate) {
 func printFile(certificate *Certificate, name string) error {
 	certPEM, keyPEM := certificate.ToPEM()
 	return task.Run(context.Background(), func() error {
-		return writeFile(certPEM, name+"_cert.pem")
+		return writeFile(certPEM, name+".crt")
 	}, func() error {
-		return writeFile(keyPEM, name+"_key.pem")
+		return writeFile(keyPEM, name+".key")
 	})
 }
 
diff --git a/main/commands/all/tls/cert.go b/main/commands/all/tls/cert.go
index c7e39eb6..83cb42b4 100644
--- a/main/commands/all/tls/cert.go
+++ b/main/commands/all/tls/cert.go
@@ -120,9 +120,9 @@ func writeFile(content []byte, name string) error {
 func printFile(certificate *cert.Certificate, name string) error {
 	certPEM, keyPEM := certificate.ToPEM()
 	return task.Run(context.Background(), func() error {
-		return writeFile(certPEM, name+"_cert.pem")
+		return writeFile(certPEM, name+".crt")
 	}, func() error {
-		return writeFile(keyPEM, name+"_key.pem")
+		return writeFile(keyPEM, name+".key")
 	})
 }