diff --git a/solution/0100-0199/0121.Best Time to Buy and Sell Stock/README.md b/solution/0100-0199/0121.Best Time to Buy and Sell Stock/README.md
index 2d217f0be055f..8092ac4ba8894 100644
--- a/solution/0100-0199/0121.Best Time to Buy and Sell Stock/README.md	
+++ b/solution/0100-0199/0121.Best Time to Buy and Sell Stock/README.md	
@@ -116,12 +116,12 @@ public:
 
 ```go
 func maxProfit(prices []int) (ans int) {
-	mi := prices[0]
+    mi, ans := prices[0] ,0
 	for _, v := range prices {
 		ans = max(ans, v-mi)
 		mi = min(mi, v)
 	}
-	return
+	return ans
 }
 ```
 
diff --git a/solution/0100-0199/0121.Best Time to Buy and Sell Stock/README_EN.md b/solution/0100-0199/0121.Best Time to Buy and Sell Stock/README_EN.md
index 98b8519df4f52..aeb77989e8f92 100644
--- a/solution/0100-0199/0121.Best Time to Buy and Sell Stock/README_EN.md	
+++ b/solution/0100-0199/0121.Best Time to Buy and Sell Stock/README_EN.md	
@@ -114,12 +114,12 @@ public:
 
 ```go
 func maxProfit(prices []int) (ans int) {
-	mi := prices[0]
+    mi, ans := prices[0] ,0
 	for _, v := range prices {
 		ans = max(ans, v-mi)
 		mi = min(mi, v)
 	}
-	return
+	return ans
 }
 ```
 
diff --git a/solution/0100-0199/0121.Best Time to Buy and Sell Stock/Solution.go b/solution/0100-0199/0121.Best Time to Buy and Sell Stock/Solution.go
index 3ad626bf456d6..cc3c671886cb0 100644
--- a/solution/0100-0199/0121.Best Time to Buy and Sell Stock/Solution.go	
+++ b/solution/0100-0199/0121.Best Time to Buy and Sell Stock/Solution.go	
@@ -1,8 +1,8 @@
 func maxProfit(prices []int) (ans int) {
-	mi := prices[0]
+    mi, ans := prices[0] ,0
 	for _, v := range prices {
 		ans = max(ans, v-mi)
 		mi = min(mi, v)
 	}
-	return
+	return ans
 }
\ No newline at end of file