diff --git a/solution/0200-0299/0231.Power of Two/README.md b/solution/0200-0299/0231.Power of Two/README.md
index 2483012af8107..e3126fa0e15a5 100644
--- a/solution/0200-0299/0231.Power of Two/README.md	
+++ b/solution/0200-0299/0231.Power of Two/README.md	
@@ -183,7 +183,7 @@ func isPowerOfTwo(n int) bool {
 
 ```ts
 function isPowerOfTwo(n: number): boolean {
-    return n > 0 && (n & (n - 1)) == 0;
+    return n > 0 && (n & (n - 1)) === 0;
 }
 ```
 
@@ -191,7 +191,7 @@ lowbit:
 
 ```ts
 function isPowerOfTwo(n: number): boolean {
-    return n > 0 && (n & (n - 1)) == 0;
+    return n > 0 && (n & (n - 1)) === 0;
 }
 ```
 
diff --git a/solution/0200-0299/0231.Power of Two/README_EN.md b/solution/0200-0299/0231.Power of Two/README_EN.md
index 40d60f5d849f3..8a2f4b5be62c1 100644
--- a/solution/0200-0299/0231.Power of Two/README_EN.md	
+++ b/solution/0200-0299/0231.Power of Two/README_EN.md	
@@ -146,7 +146,7 @@ func isPowerOfTwo(n int) bool {
 
 ```ts
 function isPowerOfTwo(n: number): boolean {
-    return n > 0 && (n & (n - 1)) == 0;
+    return n > 0 && (n & (n - 1)) === 0;
 }
 ```
 
@@ -154,7 +154,7 @@ lowbit:
 
 ```ts
 function isPowerOfTwo(n: number): boolean {
-    return n > 0 && n == (n & -n);
+    return n > 0 && n === (n & -n);
 }
 ```
 
diff --git a/solution/0200-0299/0231.Power of Two/Solution.ts b/solution/0200-0299/0231.Power of Two/Solution.ts
index 5c4abb675d1da..bfb580cec5184 100644
--- a/solution/0200-0299/0231.Power of Two/Solution.ts	
+++ b/solution/0200-0299/0231.Power of Two/Solution.ts	
@@ -1,3 +1,3 @@
 function isPowerOfTwo(n: number): boolean {
-    return n > 0 && (n & (n - 1)) == 0;
+    return n > 0 && (n & (n - 1)) === 0;
 }