diff --git a/codex-rs/core/src/tools/spec.rs b/codex-rs/core/src/tools/spec.rs
index a56bddb1ab..29f00c59a7 100644
--- a/codex-rs/core/src/tools/spec.rs
+++ b/codex-rs/core/src/tools/spec.rs
@@ -50,6 +50,8 @@ impl ToolsConfig {
 
         let shell_type = if features.enabled(Feature::UnifiedExec) {
             ConfigShellToolType::UnifiedExec
+        } else if features.enabled(Feature::ShellCommandTool) {
+            ConfigShellToolType::ShellCommand
         } else {
             model_family.shell_type.clone()
         };