diff --git a/README.md b/README.md
index 001abe1..735fc73 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 2. Run make
 3. Locate the binary in the bin directory
 4. Add the binary to your PATH
-5. Execute fabric for more information
+5. Execute dcm for more information
 ## II. Commands Reference.
 ```shell
 dcm [command]
@@ -73,6 +73,5 @@ dcm certificate check -c=../data/peer/output/renew-peer-cert.pem
 
 #### b. Folder certificate.
 ```shell script
-```shell script
 dcm certificate check -f=../data/peer/output
 ```
\ No newline at end of file
diff --git a/bin/dcm b/bin/dcm
new file mode 100755
index 0000000..79db3b2
Binary files /dev/null and b/bin/dcm differ
diff --git a/commands/certificate/check/expire.go b/commands/certificate/check/expire.go
index 9ac95dd..6b03399 100644
--- a/commands/certificate/check/expire.go
+++ b/commands/certificate/check/expire.go
@@ -2,13 +2,15 @@ package check
 
 import (
 	"akc-dcm-cli/commands/common"
+	"akc-dcm-cli/glossary"
 	"akc-dcm-cli/utilities"
 	"fmt"
 	"github.com/fatih/color"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
+	"os"
 	"path/filepath"
-	"sort"
+	"regexp"
 	"time"
 )
 
@@ -59,17 +61,24 @@ func (c *ExpireCommand) Run() error {
 	if len(c.CertPath) > 0 {
 		return checkExpireCert(c.CertPath)
 	} else {
-		certificateFiles, err := filepath.Glob(filepath.Join(c.FolderPath, "*.pem"))
+		certRegex, err := regexp.Compile(glossary.RegexCertName)
 		if err != nil {
-			return errors.WithMessage(err, "Failed to scan certificate dir")
+			return errors.WithMessage(err, "Failed to compile certificate regex")
 		}
-		sort.Strings(certificateFiles)
-		for _, file := range certificateFiles {
-			err := checkExpireCert(file)
+		err = filepath.Walk(c.FolderPath, func(path string, info os.FileInfo, err error) error {
 			if err != nil {
-				fmt.Println(fmt.Sprintf("Unable to check expire date of \"%s\" certificate", file))
-				continue
+				return errors.WithMessage(err, "Failed to scan certificate dir")
+			}
+			if certRegex.MatchString(info.Name()) {
+				err := checkExpireCert(path)
+				if err != nil {
+					fmt.Println(fmt.Sprintf("Unable to check expire date of \"%s\" certificate", path))
+				}
 			}
+			return nil
+		})
+		if err != nil {
+			return errors.WithMessage(err, "Failed to scan certificate dir")
 		}
 	}
 	return nil
@@ -82,11 +91,11 @@ func checkExpireCert(certPath string) error {
 	}
 
 	fileName := filepath.Base(certPath)
-	fmt.Println("Certificate", color.YellowString("%s", fileName), "will be expire at", color.YellowString("%s", cert.NotAfter.String()))
+	fmt.Println("Certificate", color.YellowString("%s - path (%s)", fileName, certPath), "will be expire at", color.YellowString("%s", cert.NotAfter.String()))
 	if cert.NotAfter.Before(time.Now()) {
-		fmt.Println("Certificate", color.RedString("%s was expired!!!", fileName))
+		fmt.Println("Certificate", color.RedString("%s - path (%s) was expired!!!", fileName, certPath))
 	} else {
-		fmt.Println("Certificate", color.GreenString("%s is good today.", fileName))
+		fmt.Println("Certificate", color.GreenString("%s - path (%s) is good today.", fileName, certPath))
 	}
 
 	return nil
diff --git a/data/peer/output/sub/peer-cert.crt b/data/peer/output/sub/peer-cert.crt
new file mode 100644
index 0000000..da05db8
--- /dev/null
+++ b/data/peer/output/sub/peer-cert.crt
@@ -0,0 +1,13 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/glossary/constant.go b/glossary/constant.go
index 46f1ba0..caf1037 100644
--- a/glossary/constant.go
+++ b/glossary/constant.go
@@ -5,3 +5,6 @@ const DefaultOutputPath = ".dcm/output"
 
 //Program name
 const ProgramName = "dcm"
+
+// Regex cert name
+const RegexCertName = "^.*\\.(pem|crt|PEM|CRT)$"