diff --git a/library/std/src/process.rs b/library/std/src/process.rs
index 46625e02af0..34fd76a2893 100644
--- a/library/std/src/process.rs
+++ b/library/std/src/process.rs
@@ -639,7 +639,7 @@ pub fn arg<S: AsRef<OsStr>>(&mut self, arg: S) -> &mut Command {
     ///
     /// Note that the arguments are not passed through a shell, but given
     /// literally to the program. This means that shell syntax like quotes,
-    /// escaped characters, word splitting, glob patterns, substitution, etc.
+    /// escaped characters, word splitting, glob patterns, variable substitution, etc.
     /// have no effect.
     ///
     /// # Examples