diff --git a/main.py b/main.py
index 0fe5e63..e1afb5e 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,7 @@
 import sys
 from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QLabel
 from PyQt5.QtCore import Qt
+import master_core
 
 class AudioDragDropWidget(QWidget):
     def __init__(self):
diff --git a/master-core.py b/master_core.py
similarity index 100%
rename from master-core.py
rename to master_core.py