diff --git a/Default-configuration.md b/Default-configuration.md
index fc66de5..8454ab0 100644
--- a/Default-configuration.md
+++ b/Default-configuration.md
@@ -67,7 +67,8 @@ Legend:
   * Sync word: 0x12 0xAD, 0 error bits, carrier sense above threshold not required
   * Data shaping B-T product: 0 (plain 2-FSK, no Gaussian filter applied)
   * Encoding: NRZ (non-return to zero - no encoding)
-* Inaccessible: -
+* Inaccessible:
+  * CRC Configuration: initial value `0xFFFF`, polynomial `0x8005`, final XOR `0x0000`, reflect in false, reflect out false (NOTE: CC1101 cannot change the CRC configuration, which makes it by default incompatible with the rest of FSK modules here!)
 
 Equivalent to:
 ```c++