diff --git a/2019/day1/src/main.rs b/2019/day1/src/main.rs
index cc698de..7eb1943 100644
--- a/2019/day1/src/main.rs
+++ b/2019/day1/src/main.rs
@@ -12,14 +12,14 @@ fn main() {
     ];
 
     let mut result = 0;
-    for i in all_modules.iter() {
-        result += fuel_calc(*i);
+    for &i in all_modules.iter() {
+        result += fuel_calc(i);
     }
     println!("Part1: I need {} fuel for all modules", result);
 
     //all_modules.map(fuel_calc).sum()
     //all_modules.map(fuel_calc).sum()
-    println!("Part2: I need {} fuel for all modules", all_modules.iter().fold(0, |sum, x | fuel_tyranny(*x) + sum ));
+    println!("Part2: I need {} fuel for all modules", all_modules.iter().fold(0, |sum, &x | fuel_tyranny(x) + sum ));
 }
 
 fn fuel_calc(mass: i32) -> i32 {