diff --git a/src/lib.rs b/src/lib.rs
index f9af2eaa9f6dd235b6cfe385435513597aab30b1..fd2ee78c5f764b891ea0bd1ed04641ad0599f7fa 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -75,6 +75,7 @@ mod utils;
 
 use std::ffi::OsString;
 
+/// Default pager environment variable
 const DEFAULT_PAGER_ENV: &str = "PAGER";
 
 /// Keeps track of the current pager state