Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/proc-macro-api/src/bidirectional_protocol.rs')
-rw-r--r--crates/proc-macro-api/src/bidirectional_protocol.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/crates/proc-macro-api/src/bidirectional_protocol.rs b/crates/proc-macro-api/src/bidirectional_protocol.rs
index cd1f6f6f1f..25266c46fe 100644
--- a/crates/proc-macro-api/src/bidirectional_protocol.rs
+++ b/crates/proc-macro-api/src/bidirectional_protocol.rs
@@ -28,7 +28,7 @@ use crate::{
pub mod msg;
-pub type SubCallback<'a> = &'a mut dyn FnMut(SubRequest) -> Result<SubResponse, ServerError>;
+pub type SubCallback<'a> = &'a dyn Fn(SubRequest) -> Result<SubResponse, ServerError>;
pub fn run_conversation<C: Codec>(
writer: &mut dyn Write,