diff --git a/codex-rs/core/src/tools/spec.rs b/codex-rs/core/src/tools/spec.rs
index f5b630cd3..35ebaf736 100644
--- a/codex-rs/core/src/tools/spec.rs
+++ b/codex-rs/core/src/tools/spec.rs
@@ -158,8 +158,7 @@ fn create_exec_command_tool() -> ToolSpec {
         "login".to_string(),
         JsonSchema::Boolean {
             description: Some(
-                "Whether to run the shell with -l/-i semantics. Defaults to false unless a shell snapshot is available."
-                    .to_string(),
+                "Whether to run the shell with -l/-i semantics. Defaults to true.".to_string(),
             ),
         },
     );
@@ -341,7 +340,7 @@ fn create_shell_command_tool() -> ToolSpec {
         "login".to_string(),
         JsonSchema::Boolean {
             description: Some(
-                "Whether to run the shell with login shell semantics. Defaults to false unless a shell snapshot is available."
+                "Whether to run the shell with login shell semantics. Defaults to true."
                     .to_string(),
             ),
         },