diff --git a/README-zh.md b/README-zh.md
index 007a24f..d75dfbd 100644
--- a/README-zh.md
+++ b/README-zh.md
@@ -370,15 +370,7 @@ public long Fibonacci(int n)
 ```csharp
 public long Fibonacci(int n)
 {
-    if (n == 0)
-    {
-        return 0;
-    }
-
-    if (n == 1)
-    {
-        return 1;
-    }
+    if (n == 0 || n == 1) return n;
 
     if (n > 50)
     {
diff --git a/README.md b/README.md
index 0917da9..5fdce4b 100644
--- a/README.md
+++ b/README.md
@@ -369,15 +369,7 @@ public long Fibonacci(int n)
 ```csharp
 public long Fibonacci(int n)
 {
-    if (n == 0)
-    {
-        return 0;
-    }
-
-    if (n == 1)
-    {
-        return 1;
-    }
+    if (n == 0 || n == 1) return n;
 
     if (n > 50)
     {