diff --git a/USB-protocol.md b/USB-protocol.md
index 7927d09..ed12e91 100644
--- a/USB-protocol.md
+++ b/USB-protocol.md
@@ -326,7 +326,7 @@ Status:
   Send 0x91,0x00, no read data
 ```
 
-#### Spartan-3AN internal SPI flash: dump
+#### Spartan-3AN internal SPI flash: dump entire flash (including bootloader and application mode bitstreams)
 
 ```
 Send 0x90,0x00, no read data