diff --git a/LogarithmPlotter/logarithmplotter.py b/LogarithmPlotter/logarithmplotter.py
index 0072aec..3d98e7b 100644
--- a/LogarithmPlotter/logarithmplotter.py
+++ b/LogarithmPlotter/logarithmplotter.py
@@ -44,7 +44,7 @@ if path.realpath(path.join(getcwd(), "..")) not in sys_path:
     sys_path.append(path.realpath(path.join(getcwd(), "..")))
 
 
-from LogarithmPlotter import config, __VERSION__
+from LogarithmPlotter import config, native, __VERSION__
 from LogarithmPlotter.update import check_for_updates
 config.init()
 
@@ -165,6 +165,13 @@ def run():
     app.setApplicationName("LogarithmPlotter")
     app.setOrganizationName("Ad5001")
     app.setWindowIcon(QIcon(path.realpath(path.join(getcwd(), "logarithmplotter.svg"))))
+    
+    # Installing macOS file handler.
+    macOSFileOpenHandler = None
+    if platform == "darwin":
+        macOSFileOpenHandler = native.MacOSFileOpenHandler()
+        app.installEventFilter(macOSFileOpenHandler)
+    
     engine = QQmlApplicationEngine()
     helper = Helper()
     engine.rootContext().setContextProperty("Helper", helper)
@@ -183,6 +190,9 @@ def run():
         print("No root object")
         exit(-1)
     
+    if platform == "darwin":
+        macOSFileOpenHandler.init_graphics(engine.rootObjects()[0])
+    
     # Check for updates
     if config.getSetting("check_for_updates"):
         check_for_updates(__VERSION__, engine.rootObjects()[0])
diff --git a/LogarithmPlotter/native.py b/LogarithmPlotter/native.py
new file mode 100644
index 0000000..dc7797d
--- /dev/null
+++ b/LogarithmPlotter/native.py
@@ -0,0 +1,50 @@
+"""
+ *  LogarithmPlotter - Create graphs with logarithm scales.
+ *  Copyright (C) 2021  Ad5001
+ * 
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+"""
+
+# This file contains stuff for native interactions with each OS.
+
+from PySide2.QtCore import QObject, QEvent
+
+# On macOS, opening a file through finder can only be fetched through the
+# QFileOpenEvent and NOT throught command line parameters.
+class MacOSFileOpenHandler(QObject):
+    def __init__(self):
+        self.initilized = False
+        self.mainwindow = None
+        self.opened_file = ""
+        QObject.__init__(self)
+    
+    def init_graphics(self, mainwindow):
+        self.mainwindow = mainwindow
+        self.initilized = True
+        if self.opened_file != "":
+            self.open_file()
+            
+    def open_file(self):
+        self.mainwindow.loadDiagram(self.opened_file)
+    
+    def eventFilter(self, obj, event):
+        if event.type() == QEvent.FileOpen:
+            print("Got file", event.file(), self.initilized)
+            self.opened_file = event.file()
+            if self.initilized:
+                self.open_file()
+            return True
+        else:
+            # standard event processing
+            return QObject.eventFilter(self, obj, event)