diff --git a/benchmark.txt b/benchmark.txt
index 1313221..9db7c6f 100644
--- a/benchmark.txt
+++ b/benchmark.txt
@@ -5,3 +5,4 @@
  95 FxHashMap
  71 mmap, reduced UTF8 parsing (names)
  50 manual number parsing
+ 48 unchecked unwrap
diff --git a/src/main.rs b/src/main.rs
index bd8b9e5..eb2ec99 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -29,9 +29,9 @@ fn main() {
         let line = &mmap[pointer..pointer + length];
 
         let mut split = line.split(|&c| c == b';');
-        let station = split.next().unwrap();
-        let number = split.next().unwrap();
-        let parsed = parse_number(number);
+        let station = unsafe { split.next().unwrap_unchecked() };
+        let number = unsafe { split.next().unwrap_unchecked() };
+        let parsed = unsafe { parse_number(number) };
         // panic!();
 
         data.entry(station)
@@ -70,27 +70,29 @@ fn main() {
     println!("}}");
 }
 
-fn parse_number(number: &[u8]) -> i64 {
-    let sign = if *number.first().unwrap() == b'-' {
-        -1
-    } else {
-        1
-    };
+unsafe fn parse_number(number: &[u8]) -> i64 {
+    unsafe {
+        let sign = if *number.first().unwrap_unchecked() == b'-' {
+            -1
+        } else {
+            1
+        };
 
-    let mut iter = number.iter().rev();
+        let mut iter = number.iter().rev();
 
-    // 48: ASCII '0'
-    let mut result = (iter.next().unwrap() - 48) as i64;
-    iter.next(); // skip '.'
-    result += ((iter.next().unwrap() - 48) as i64) * 10;
+        // 48: ASCII '0'
+        let mut result = (iter.next().unwrap_unchecked() - 48) as i64;
+        iter.next(); // skip '.'
+        result += ((iter.next().unwrap_unchecked() - 48) as i64) * 10;
 
-    if let Some(hundreds) = iter.next()
-        && *hundreds != b'-'
-    {
-        result += ((hundreds - 48) as i64) * 100;
+        if let Some(hundreds) = iter.next()
+            && *hundreds != b'-'
+        {
+            result += ((hundreds - 48) as i64) * 100;
+        }
+
+        sign * result
     }
-
-    sign * result
 }
 
 #[cfg(test)]
@@ -100,6 +102,6 @@ mod tests {
     #[test]
     fn test_parse_number() {
         let input = [49, 53, 46, 51]; // "15.3"
-        assert_eq!(parse_number(&input), 153);
+        assert_eq!(unsafe { parse_number(&input) }, 153);
     }
 }