diff --git a/SessionUtilitiesKit/Crypto/Mnemonic.swift b/SessionUtilitiesKit/Crypto/Mnemonic.swift
index a9d2463b2..aaf88d8ef 100644
--- a/SessionUtilitiesKit/Crypto/Mnemonic.swift
+++ b/SessionUtilitiesKit/Crypto/Mnemonic.swift
@@ -118,7 +118,7 @@ public enum Mnemonic {
         
         // Check preconditions
         guard words.count >= 12 else { throw DecodingError.inputTooShort }
-        guard !words.count.isMultiple(of: 3) else { throw DecodingError.missingLastWord }
+        guard words.count == 12 else { throw DecodingError.generic }
         
         // Get checksum word
         let checksumWord = words.popLast()!