diff --git a/config/config.go b/config/config.go
index 4d77a9f50..e7f8b8259 100644
--- a/config/config.go
+++ b/config/config.go
@@ -288,6 +288,9 @@ func (conf *Config) BasicCheck() error {
 	if err := conf.JSONRPC.BasicCheck(); err != nil {
 		return err
 	}
+	if err := conf.GRPC.BasicCheck(); err != nil {
+		return err
+	}
 
 	return conf.HTTP.BasicCheck()
 }
diff --git a/www/grpc/config.go b/www/grpc/config.go
index a8b09e582..a413833c2 100644
--- a/www/grpc/config.go
+++ b/www/grpc/config.go
@@ -1,5 +1,7 @@
 package grpc
 
+import "github.com/pactus-project/pactus/util/htpasswd"
+
 type Config struct {
 	Enable       bool          `toml:"enable"`
 	EnableWallet bool          `toml:"enable_wallet"`
@@ -23,3 +25,13 @@ func DefaultConfig() *Config {
 		},
 	}
 }
+
+func (c *Config) BasicCheck() error {
+	if c.BasicAuth != "" {
+		if _, _, err := htpasswd.ExtractBasicAuth(c.BasicAuth); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}