diff --git a/src/chat.rs b/src/chat.rs
index c9dfc6dc8..51061946b 100644
--- a/src/chat.rs
+++ b/src/chat.rs
@@ -1991,9 +1991,6 @@ impl Chat {
                 .ok();
         }
 
-        // reset encrypt error state eg. for forwarding
-        msg.param.remove(Param::ErroneousE2ee);
-
         let is_bot = context.get_config_bool(Config::Bot).await?;
         msg.param
             .set_optional(Param::Bot, Some("1").filter(|_| is_bot));
diff --git a/src/message.rs b/src/message.rs
index 99c4694ca..ab8efed4b 100644
--- a/src/message.rs
+++ b/src/message.rs
@@ -293,13 +293,7 @@ impl MsgId {
             ret += ", Location sent";
         }
 
-        let e2ee_errors = msg.param.get_int(Param::ErroneousE2ee).unwrap_or_default();
-
-        if 0 != e2ee_errors {
-            if 0 != e2ee_errors & 0x2 {
-                ret += ", Encrypted, no valid signature";
-            }
-        } else if 0 != msg.param.get_int(Param::GuaranteeE2ee).unwrap_or_default() {
+        if 0 != msg.param.get_int(Param::GuaranteeE2ee).unwrap_or_default() {
             ret += ", Encrypted";
         }
 
diff --git a/src/param.rs b/src/param.rs
index d83beef6b..920035728 100644
--- a/src/param.rs
+++ b/src/param.rs
@@ -55,6 +55,8 @@ pub enum Param {
 
     /// For Messages: decrypted with validation errors or without mutual set, if neither
     /// 'c' nor 'e' are preset, the messages is only transport encrypted.
+    ///
+    /// Deprecated on 2024-12-25.
     ErroneousE2ee = b'e',
 
     /// For Messages: force unencrypted message, a value from `ForcePlaintext` enum.