diff --git a/src/lib.rs b/src/lib.rs
index b94de83..db7b421 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -31,24 +31,6 @@ pub struct Header {
     pub value: Cow<'static, str>,
 }
 
-impl From<service_protocol::messages::Header> for Header {
-    fn from(header: service_protocol::messages::Header) -> Self {
-        Self {
-            key: Cow::Owned(header.key),
-            value: Cow::Owned(header.value),
-        }
-    }
-}
-
-impl From<Header> for service_protocol::messages::Header {
-    fn from(header: Header) -> Self {
-        Self {
-            key: header.key.into(),
-            value: header.value.into(),
-        }
-    }
-}
-
 #[derive(Debug)]
 pub struct ResponseHead {
     pub status_code: u16,
diff --git a/src/service_protocol/messages.rs b/src/service_protocol/messages.rs
index 72bd0ce..3ce2464 100644
--- a/src/service_protocol/messages.rs
+++ b/src/service_protocol/messages.rs
@@ -1,3 +1,5 @@
+use std::borrow::Cow;
+
 use crate::service_protocol::messages::get_state_keys_entry_message::StateKeys;
 use crate::service_protocol::{MessageHeader, MessageType};
 use crate::vm::errors::{
@@ -455,6 +457,24 @@ impl From<Failure> for crate::TerminalFailure {
     }
 }
 
+impl From<Header> for crate::Header {
+    fn from(header: Header) -> Self {
+        Self {
+            key: Cow::Owned(header.key),
+            value: Cow::Owned(header.value),
+        }
+    }
+}
+
+impl From<crate::Header> for Header {
+    fn from(header: crate::Header) -> Self {
+        Self {
+            key: header.key.into(),
+            value: header.value.into(),
+        }
+    }
+}
+
 // --- Completion parsing
 
 #[derive(Debug)]