diff --git a/packages/opencode/src/session/prompt.ts b/packages/opencode/src/session/prompt.ts
index e73e1aff9..2950b8e22 100644
--- a/packages/opencode/src/session/prompt.ts
+++ b/packages/opencode/src/session/prompt.ts
@@ -534,7 +534,7 @@ export namespace SessionPrompt {
         sessionID,
         system: [
           ...(await SystemPrompt.environment()),
-          ...(await SystemPrompt.skills(agent.name)),
+          ...(tools.skill ? await SystemPrompt.skills(agent.name) : []),
           ...(await SystemPrompt.custom()),
         ],
         messages: [