diff --git a/solutions/3431. Minimum Unlocked Indices to Sort Nums/3431.java b/solutions/3431. Minimum Unlocked Indices to Sort Nums/3431.java
index 489b808ef2c..85a8d0fb017 100644
--- a/solutions/3431. Minimum Unlocked Indices to Sort Nums/3431.java	
+++ b/solutions/3431. Minimum Unlocked Indices to Sort Nums/3431.java	
@@ -19,7 +19,7 @@ public int minUnlockedIndices(int[] nums, int[] locked) {
     if (first3 != -1 && last2 != -1)
       for (int i = first3; i < last2; i++)
         if (locked[i] == 1)
-          +ans;
+          ++ans;
 
     return ans;
   }