diff --git a/cmd/ghz/main.go b/cmd/ghz/main.go
index 38664d56..414e934a 100644
--- a/cmd/ghz/main.go
+++ b/cmd/ghz/main.go
@@ -26,6 +26,7 @@ var (
 	cert     = flag.String("cert", "", "Client certificate file. If Omitted insecure is used.")
 	cname    = flag.String("cname", "", "Server Cert CName Override - useful for self signed certs.")
 	cPath    = flag.String("config", "", "Path to the config JSON file.")
+	insecure = flag.Bool("insecure", false, "Specify for non TLS connection")
 
 	c = flag.Int("c", 50, "Number of requests to run concurrently.")
 	n = flag.Int("n", 200, "Number of requests to run. Default is 200.")
@@ -61,9 +62,10 @@ Options:
   -call		A fully-qualified method name in 'service/method' or 'service.method' format.
   -cert		The file containing the CA root cert file.
   -cname	An override of the expect Server Cname presented by the server.
-  -config	Path to the config JSON file.
+  -config	Path to the config JSON file
+  -insecure     Specify for non TLS connection
 
-  -c  Number of requests to run concurrently. Total number of requests cannot 
+  -c  Number of requests to run concurrently. Total number of requests cannot
       be smaller than the concurrency level. Default is 50.
   -n  Number of requests to run. Default is 200.
   -q  Rate limit, in queries per second (QPS). Default is no rate limit.
@@ -74,23 +76,23 @@ Options:
   -x  Maximum duration of application to send requests with n setting respected.
       If duration is reached before n requests are completed, application stops and exits.
       Examples: -x 10s -x 3m.
-  
-  -d  The call data as stringified JSON. 
+
+  -d  The call data as stringified JSON.
       If the value is '@' then the request contents are read from stdin.
   -D  Path for call data JSON file. For example, /home/user/file.json or ./file.json.
   -m  Request metadata as stringified JSON.
   -M  Path for call metadata JSON file. For example, /home/user/metadata.json or ./metadata.json.
- 
+
   -o  Output path. If none provided stdout is used.
   -O  Output type. If none provided, a summary is printed.
       "csv" outputs the response metrics in comma-separated values format.
       "json" outputs the metrics report in JSON format.
       "pretty" outputs the metrics report in pretty JSON format.
       "html" outputs the metrics report as HTML.
-	  
+
   -i  Comma separated list of proto import paths. The current working directory and the directory
 	  of the protocol buffer file are automatically added to the import list.
-	  
+
   -T  Connection timeout in seconds for the initial connection dial. Default is 10.
   -L  Keepalive time in seconds. Only used if present and above 0.
 
@@ -140,7 +142,7 @@ func main() {
 		}
 
 		cfg, err = config.New(*proto, *protoset, *call, *cert, *cname, *n, *c, *q, *z, *x, *t,
-			*data, *dataPath, *md, *mdPath, *output, *format, host, *ct, *kt, *cpus, iPaths)
+			*data, *dataPath, *md, *mdPath, *output, *format, host, *ct, *kt, *cpus, iPaths, *insecure)
 		if err != nil {
 			errAndExit(err.Error())
 		}
@@ -206,6 +208,7 @@ func runTest(config *config.Config) (*ghz.Report, error) {
 		KeepaliveTime: config.KeepaliveTime,
 		Data:          config.Data,
 		Metadata:      config.Metadata,
+		Insecure:      config.Insecure,
 	}
 
 	reqr, err := ghz.New(mtd, opts)
diff --git a/config/config.go b/config/config.go
index 6e317520..b315e547 100644
--- a/config/config.go
+++ b/config/config.go
@@ -38,12 +38,13 @@ type Config struct {
 	KeepaliveTime int                `json:"L"`
 	CPUs          int                `json:"cpus"`
 	ImportPaths   []string           `json:"i,omitempty"`
+	Insecure      bool               `json:"insecure,omitempty"`
 }
 
 // New creates a new config
 func New(proto, protoset, call, cert, cName string, n, c, qps int, z time.Duration, x time.Duration,
 	timeout int, data, dataPath, metadata, mdPath, output, format, host string,
-	dialTimout, keepaliveTime, cpus int, importPaths []string) (*Config, error) {
+	dialTimout, keepaliveTime, cpus int, importPaths []string, insecure bool) (*Config, error) {
 
 	cfg := &Config{
 		Proto:         proto,
@@ -65,7 +66,8 @@ func New(proto, protoset, call, cert, cName string, n, c, qps int, z time.Durati
 		ImportPaths:   importPaths,
 		DialTimeout:   dialTimout,
 		KeepaliveTime: keepaliveTime,
-		CPUs:          cpus}
+		CPUs:          cpus,
+		Insecure:      insecure}
 
 	if data == "@" {
 		b, err := ioutil.ReadAll(os.Stdin)
diff --git a/requester.go b/requester.go
index f8193677..ecf2526a 100644
--- a/requester.go
+++ b/requester.go
@@ -35,6 +35,7 @@ type Options struct {
 	KeepaliveTime int                `json:"keepAlice,omitempty"`
 	Data          interface{}        `json:"data,omitempty"`
 	Metadata      *map[string]string `json:"metadata,omitempty"`
+	Insecure      bool               `json:"insecure,omitempty"`
 }
 
 // Max size of the buffer of result channel.
@@ -335,15 +336,21 @@ func (b *Requester) makeBidiRequest(ctx *context.Context, input *[]*dynamic.Mess
 }
 
 func createClientCredOption(config *Options) (grpc.DialOption, error) {
-	credOptions := grpc.WithInsecure()
+	if config.Insecure {
+		credOptions := grpc.WithInsecure()
+		return credOptions, nil
+	}
+
 	if strings.TrimSpace(config.Cert) != "" {
 		creds, err := credentials.NewClientTLSFromFile(config.Cert, config.CName)
 		if err != nil {
 			return nil, err
 		}
-		credOptions = grpc.WithTransportCredentials(creds)
+		credOptions := grpc.WithTransportCredentials(creds)
+		return credOptions, nil
 	}
 
+	credOptions := grpc.WithTransportCredentials(credentials.NewClientTLSFromCert(nil, ""))
 	return credOptions, nil
 }