diff --git a/Care.md b/Care.md
index 14245ba..f1777e4 100644
--- a/Care.md
+++ b/Care.md
@@ -8,4 +8,6 @@
 
 * Do not overtighten RF cables to the HackRF SMA connectors. If you tighten too much, the [SMA connector](SMA-Antenna-connector) can snap off the HackRF board.
 
-* Disconnect all cables and connectors before storing your PortaPack. Sideways force on plugs can loosen and damage PortaPack and HackRF [connectors](SMA-Antenna-connector).
\ No newline at end of file
+* Disconnect all cables and connectors before storing your PortaPack. Sideways force on plugs can loosen and damage PortaPack and HackRF [connectors](SMA-Antenna-connector).
+
+* Do not change antennas with your HackRF powered up. 
\ No newline at end of file