diff --git a/chain/src/pibd_params.rs b/chain/src/pibd_params.rs
index c670ccbff..d665f0ebf 100644
--- a/chain/src/pibd_params.rs
+++ b/chain/src/pibd_params.rs
@@ -250,7 +250,7 @@ impl PibdParams {
 			cmp::min(range.start.saturating_add(1), range.end.saturating_sub(1))
 		} else {
 			debug_assert!(range.end - range.start <= 3); // it is not true, add more ifs for memory checking
-			cmp::min(range.start.saturating_add(2), range.end.saturating_sub(2))
+			cmp::min(range.start.saturating_add(2), range.end.saturating_sub(1))
 		}
 	}
 
diff --git a/p2p/src/types.rs b/p2p/src/types.rs
index 120a1be39..eeb10000f 100644
--- a/p2p/src/types.rs
+++ b/p2p/src/types.rs
@@ -68,7 +68,7 @@ const PEER_MAX_OUTBOUND_COUNT: u32 = 10;
 const PEER_MIN_PREFERRED_OUTBOUND_COUNT: u32 = 8;
 
 /// During sync process we want to boost peers discovery.
-const PEER_BOOST_OUTBOUND_COUNT: u32 = 100;
+const PEER_BOOST_OUTBOUND_COUNT: u32 = 25;
 
 /// The peer listener buffer count. Allows temporarily accepting more connections
 /// than allowed by PEER_MAX_INBOUND_COUNT to encourage network bootstrapping.