diff --git a/src/number.rs b/src/number.rs
index 8591b0a..8f12f43 100644
--- a/src/number.rs
+++ b/src/number.rs
@@ -427,35 +427,32 @@ impl Ord for Number {
         } else if self.sign == Sign::Positif && other.sign == Sign::Negatif {
             return Ordering::Greater;
         }
-        if self.digits.len() < other.digits.len() {
-            if self.sign == Sign::Positif {
-                return Ordering::Less;
-            } else if self.sign == Sign::Negatif {
-                return Ordering::Greater;
-            }
-        } else if self.digits.len() > other.digits.len() {
-            if self.sign == Sign::Positif {
-                return Ordering::Greater;
-            } else if self.sign == Sign::Negatif {
-                return Ordering::Less;
+        match self.digits.len().cmp(&other.digits.len()) {
+            Ordering::Less => match self.sign {
+                Sign::Positif => Ordering::Less,
+                Sign::Negatif => Ordering::Greater,
+            },
+            Ordering::Greater => match self.sign {
+                Sign::Positif => Ordering::Greater,
+                Sign::Negatif => Ordering::Less,
+            },
+            Ordering::Equal => {
+                for pair in zip(&self.digits, &other.digits) {
+                    return match pair.0.cmp(pair.1) {
+                        Ordering::Less => match self.sign {
+                            Sign::Positif => Ordering::Less,
+                            Sign::Negatif => Ordering::Greater,
+                        },
+                        Ordering::Greater => match self.sign {
+                            Sign::Positif => Ordering::Greater,
+                            Sign::Negatif => Ordering::Less,
+                        },
+                        Ordering::Equal => continue,
+                    };
+                }
+                Ordering::Equal
             }
         }
-        for pair in zip(&self.digits, &other.digits) {
-            if pair.0 < pair.1 {
-                if self.sign == Sign::Positif {
-                    return Ordering::Less;
-                } else if self.sign == Sign::Negatif {
-                    return Ordering::Greater;
-                }
-            } else if pair.0 > pair.1 {
-                if self.sign == Sign::Positif {
-                    return Ordering::Greater;
-                } else if self.sign == Sign::Negatif {
-                    return Ordering::Less;
-                }
-            }
-        }
-        Ordering::Equal
     }
 }