diff --git a/src/defense.rs b/src/defense.rs
index 92d6f5c..ae79b22 100644
--- a/src/defense.rs
+++ b/src/defense.rs
@@ -51,15 +51,6 @@ pub struct Level {
     difficulty_factor: u32,
 }
 
-impl Default for Level {
-    fn default() -> Self {
-        Level {
-            visitor_threshold: 0,
-            difficulty_factor: 0,
-        }
-    }
-}
-
 /// Bulder struct for [Level] to describe threshold-difficulty factor mapping
 #[derive(Debug, Copy, Clone, PartialEq)]
 pub struct LevelBuilder {
@@ -176,15 +167,6 @@ impl DefenseBuilder {
     }
 }
 
-impl Default for Defense {
-    fn default() -> Self {
-        Defense {
-            levels: vec![Level::default()],
-            current_visitor_threshold: 0,
-        }
-    }
-}
-
 impl Defense {
     ///! Difficulty is calculated as:
     ///! ```rust
diff --git a/src/mcaptcha.rs b/src/mcaptcha.rs
index e66d5c4..7b41788 100644
--- a/src/mcaptcha.rs
+++ b/src/mcaptcha.rs
@@ -76,8 +76,6 @@ use std::time::Duration;
 
 use actix::dev::*;
 use derive_builder::Builder;
-use pow_sha256::PoW as ShaPoW;
-use serde::Deserialize;
 
 use crate::defense::Defense;
 
@@ -156,21 +154,6 @@ impl Handler<Visitor> for MCaptcha {
     }
 }
 
-/// Message to decrement the visitor count
-#[derive(Message, Deserialize)]
-#[rtype(result = "()")]
-pub struct VerifyPoW {
-    pow: ShaPoW<Vec<u8>>,
-    id: String,
-}
-
-impl Handler<VerifyPoW> for MCaptcha {
-    type Result = ();
-    fn handle(&mut self, _: VerifyPoW, _ctx: &mut Self::Context) -> Self::Result {
-        self.decrement_visiotr();
-    }
-}
-
 #[cfg(test)]
 pub mod tests {
     use super::*;