diff --git a/waku/waku_rln_relay/constants.nim b/waku/waku_rln_relay/constants.nim
index 8532abaaa..24af7a813 100644
--- a/waku/waku_rln_relay/constants.nim
+++ b/waku/waku_rln_relay/constants.nim
@@ -5,7 +5,7 @@ import ./protocol_types
 import ../waku_keystore
 
 # Acceptable roots for merkle root validation of incoming messages
-const AcceptableRootWindowSize* = 50
+const AcceptableRootWindowSize* = 10
 
 # RLN membership key and index files path
 const RlnCredentialsFilename* = "rlnCredentials.txt"