diff --git a/status-spec.md b/status-spec.md
index d5e6a99..e4083fc 100644
--- a/status-spec.md
+++ b/status-spec.md
@@ -69,6 +69,9 @@ allows for TCP-based communication between nodes.
 On top of this we run the RLPx-based subprotocol [Whisper
 v6](https://eips.ethereum.org/EIPS/eip-627) for privacy-preserving messaging.
 
+There MUST be an Ethereum node that is capable of discovering peers and
+implements Whisper V6 specification.
+
 ## Node discovery and roles
 
 There are four types of node roles:
@@ -159,6 +162,10 @@ communicate with other Status nodes.
 Once a Whisper node is up and running there are some specific settings required
 to commmunicate with other Status nodes.
 
+Worth noting is that in Whisper time MUST be synced between all nodes
+participating in the given network. A clock drift between two peers larger than
+20 seconds MAY result in discarding incoming messages.
+
 ### Node configuration
 
 Whisper's Proof Of Work algorithm is used to deter denial of service and various
diff --git a/x7.md b/x7.md
index 7c5f6fc..5d0b006 100644
--- a/x7.md
+++ b/x7.md
@@ -37,14 +37,7 @@
 * *Envelope*: encrypted message with some metadata like topic and TTL sent between Whisper nodes; a symmetric or asymmetric key is needed to decrypt it and read the payload
 * *Offline message*: an expired envelope stored by a Whisper node permanently
 
-# Basic Assumption
-
-This protocol assumes the following:
-1. There MUST be an Ethereum node that is capable of discovering peers and implements Whisper V6 specification.
-2. Participants of a given Whisper network in order to communicate with each other MUST accept messages with lowered PoW value. More in (Whisper node configuration)(#whisper-node-configuration).
-3. Time MUST be synced between all nodes participating in the given network (this is intrinsic requirement of the Whisper specification as well). A clock drift between two peers larger than 20 seconds MAY result in discarding incoming messages.
-
-# Perfect Forward Secrecy (PFS)
+ Perfect Forward Secrecy (PFS)
 
 Additionally to encrypting messages on the Whisper level, the protocol supports PFS specification.