diff --git a/x7.md b/x7.md
index 0cdb0d6..aefb7aa 100644
--- a/x7.md
+++ b/x7.md
@@ -540,7 +540,7 @@ For a mixnet based approach, see e.g. https://github.com/w3f/messaging/issues/22
 #### Spam/Flood Resistant (PARTIAL)
 > The availability of the system is resistant to denial-of-service attacks and bulk messaging
 
-- Proof of work produces a nonce based on payload and TTL. However, this doesn't take heterogenerous devices into account.
+- Proof of work produces a nonce based on payload and TTL. However, this doesn't take heterogeneous devices into account.
 
 - For Status this is a NO since PoW is set arbitrarily low.