diff --git a/src/cli.rs b/src/cli.rs
index fee8d08..13f33d3 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -94,7 +94,7 @@ pub struct MappingArgs {
     #[arg(long = "backoff-max", value_name = "SECONDS")]
     pub backoff_max: Option<u32>,
 
-    /// SSH ServerAliveInterval, in seconds\.
+    /// SSH ServerAliveInterval, in seconds.
     #[arg(long, value_name = "SECONDS")]
     pub keepalive: Option<u32>,
 }