diff --git a/src/od/prn_float.rs b/src/od/prn_float.rs
index 19ba3cca3..1a4ba6ce0 100644
--- a/src/od/prn_float.rs
+++ b/src/od/prn_float.rs
@@ -72,7 +72,7 @@ fn format_float(f: f64, width: usize, precision: usize) -> String {
     let r = 10f64.powi(l);
     if (f > 0.0 && r > f) || (f < 0.0 && -r < f) {
         // fix precision error
-        l = l - 1;
+        l -= 1;
     }
 
     if l >= 0 && l <= (precision as i32 - 1) {
diff --git a/src/uniq/uniq.rs b/src/uniq/uniq.rs
index 83112a60b..8554d4571 100644
--- a/src/uniq/uniq.rs
+++ b/src/uniq/uniq.rs
@@ -79,12 +79,12 @@ impl Uniq {
                 let mut i = 0;
                 while field < skip_fields && i < line.len() {
                     while i < line.len() && line.chars().nth(i).unwrap().is_whitespace() {
-                        i = i + 1;
+                        i += 1;
                     }
                     while i < line.len() && !line.chars().nth(i).unwrap().is_whitespace() {
-                        i = i + 1;
+                        i += 1;
                     }
-                    field = field + 1;
+                    field += 1;
                 }
                 &line[i..]
             } else {