diff --git a/src/simudator/gui/module_graphics_item/memory_graphic.py b/src/simudator/gui/module_graphics_item/memory_graphic.py
index 38221ae5346194ba6890d393759472efbdfe5085..2817042cc772ef63fbbce36395542b585fda8eec 100644
--- a/src/simudator/gui/module_graphics_item/memory_graphic.py
+++ b/src/simudator/gui/module_graphics_item/memory_graphic.py
@@ -35,14 +35,14 @@ class MemoryWindow(QTableWidget):
         super().__init__()
         self._memory = memory_module
         self._column_size = column_size
-        self._memory_size = len(self.memory.get_state()["memory"])
+        self._memory_size = len(self._memory.get_state()["memory"])
         self._set_column_size()
         self.setColumnCount(self._column_size)
-        self.setRowCount(ceil(self.memory_size / self._column_size))
+        self.setRowCount(ceil(self._memory_size / self._column_size))
         self.setHorizontalHeaderLabels(["+" + str(i) for i in range(4)])
 
         vertical_headers = []
-        for i in range(0, self.memory_size, self._column_size):
+        for i in range(0, self._memory_size, self._column_size):
             vertical_headers.append(str(hex(i)))
 
         self.setVerticalHeaderLabels(vertical_headers)
@@ -53,8 +53,8 @@ class MemoryWindow(QTableWidget):
         """
         Update the content of this widget to reflect the content of the memory module.
         """
-        memory_content = self.memory.get_state()["memory"]
-        for i in range(self.memory_size):
+        memory_content = self._memory.get_state()["memory"]
+        for i in range(self._memory_size):
             value = memory_content[i]
             row = i // self._column_size
             col = i % self._column_size
@@ -86,11 +86,11 @@ class MemoryWindow(QTableWidget):
         if not self._column_size == -1:
             return
 
-        if self.memory_size > 200:
+        if self._memory_size > 200:
             self._column_size = 4
             return
 
-        if self.memory_size > 100:
+        if self._memory_size > 100:
             self._column_size = 2
             return