diff --git a/protocol/src/lib.rs b/protocol/src/lib.rs
index 57a3b47..6e559f3 100644
--- a/protocol/src/lib.rs
+++ b/protocol/src/lib.rs
@@ -10,6 +10,7 @@ pub struct User {
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum Error {
+    Permission(String),
     MediaPlay(String),
     MediaStream(String),
     InvalidSignalType(String),
@@ -41,6 +42,7 @@ impl std::error::Error for Error {
 impl Display for Error {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
+            Error::Permission(permission_cause) => write!(f, "Permission | {}", permission_cause),
             Error::MediaPlay(err_val) => write!(f, "Media Play | {}", err_val),
             Error::MediaStream(err_val) => write!(f, "Media Stream | {}", err_val),
             Error::InvalidSignalType(invalid_signal_type) => {