diff --git a/matrix/count_islands_in_matrix.py b/matrix/count_islands_in_matrix.py
index 393b4c53f..9eb83f4c3 100644
--- a/matrix/count_islands_in_matrix.py
+++ b/matrix/count_islands_in_matrix.py
@@ -92,7 +92,7 @@ class Matrix:  # Public class to implement a graph
         count = 0
         for i in range(self.ROW):
             for j in range(self.COL):
-                if visited[i][j] is False and self.graph[i][j]:
+                if visited[i][j] is False and self.graph[i][j] == 1:
                     self.diffs(i, j, visited)
                     count += 1
         return count