diff --git a/file.py b/file.py
index 31c6594..3182824 100644
--- a/file.py
+++ b/file.py
@@ -17,6 +17,8 @@ class FileActions:
         if dialog.exec():
             for file_path in dialog.selectedFiles():
                 self.app.open_files.append(File(self.app, file_path, file_path.split("/")[-1]))
+                if not file_path in self.app.open_files:  # dont open file twice
+                    self.app.open_files[file_path] = File(self.app, file_path, file_path.split("/")[-1])
 
 
 class File:
diff --git a/main.py b/main.py
index c56a1d8..9ca6e73 100644
--- a/main.py
+++ b/main.py
@@ -13,7 +13,7 @@ class BreadEditor:
         self.utils = Utils(self)
         self.file_actions = FileActions(self)
 
-        self.open_files = []
+        self.open_files = {}
 
         self.qt_app = QApplication(sys.argv)