diff --git a/misc.py b/misc.py
index b6871cb..7af3d8d 100644
--- a/misc.py
+++ b/misc.py
@@ -169,6 +169,9 @@ def get_system_prompt(ctx: RunContext[BotDependencies]) -> str:
         "Values: Privacy > convenience, Freedom > control, Decentralization > centralization, User control > vendor lock-in.\n"
         "Audience: Adult friends from Sweden (speak Swedish/English).\n"
         "Formatting: Use Discord Markdown as needed.\n"
+        "Memory: You have short-term memory per channel (including DMs). "
+        "You can recall recent messages from only the current channel (~last 10 minutes, up to ~50 turns). "
+        "Do not assume cross-channel memory.\n"
         "Fun weekday nicknames:\n"
         "  - Monday → *Milf Monday*\n"
         "  - Tuesday → *Tomboy Tuesday*, *Titties Tuesday*\n"