diff --git a/Graphs/0_1_Matrix.java b/Graphs/0_1_Matrix.java
index acd92c0..50545bc 100644
--- a/Graphs/0_1_Matrix.java
+++ b/Graphs/0_1_Matrix.java
@@ -1,3 +1,4 @@
+// https://leetcode.com/problems/01-matrix/
 
 import java.util.*;
 
@@ -26,7 +27,7 @@ class Main {
         
         for (int i=0; i<n; i++){
             for (int j=0; j<m; j++){
-                if (grid[i][j]==1){
+                if (grid[i][j]==0){ //grid[i][j]==0 for leetcode grid[i][j]==1 for gfg
                     q.add(new Node(i,j,0));
                     visited[i][j]=true;
                 }