diff --git a/src/filter.rs b/src/filter.rs
index 56d4ba3..0ff5965 100644
--- a/src/filter.rs
+++ b/src/filter.rs
@@ -3,18 +3,12 @@ use std::str;
 pub fn filter(block_list: &Vec<String>, buf: &[u8]) -> String {
     let statsd_str = unsafe { str::from_utf8_unchecked(&buf) };
 
-    let result_itr = statsd_str.split("\n").filter(|line| {
-        for prefix in block_list.iter() {
-            if line.starts_with(prefix) {
-                return false;
-            }
-        }
-        return true;
-    });
-
-    let result = result_itr.collect::<Vec<&str>>().join("\n");
-    
-    return result;
+    statsd_str.split("\n")
+        .filter(|line| {
+            !block_list.iter().any(|prefix| line.starts_with(prefix))
+        })
+        .collect::<Vec<&str>>()
+        .join("\n")
 }
 
 #[cfg(test)]