diff --git a/configure.py b/configure.py
index d98dab21..052db5d0 100755
--- a/configure.py
+++ b/configure.py
@@ -364,14 +364,17 @@ def on_theme_change(self, e=None):
         self.load_theme_preview()
 
     def on_theme_editor_click(self):
-        subprocess.Popen(os.path.join(os.getcwd(), "theme-editor.py") + " \"" + self.theme_cb.get() + "\"", shell=True)
+        subprocess.Popen([sys.executable, os.path.join(os.getcwd(), "theme-editor.py"), self.theme_cb.get()])
 
     def on_save_click(self):
         self.save_config_values()
 
     def on_saverun_click(self):
         self.save_config_values()
-        subprocess.Popen(os.path.join(os.getcwd(), "main.py"), shell=True)
+        kwargs = {}
+        if hasattr(subprocess, "DETACHED_PROCESS"):
+            kwargs["creationflags"] = subprocess.DETACHED_PROCESS
+        subprocess.Popen([sys.executable, os.path.join(os.getcwd(), "main.py")], **kwargs)
         self.window.destroy()
 
     def on_brightness_change(self, e=None):
diff --git a/main.py b/main.py
index 0402f6e7..8218b616 100755
--- a/main.py
+++ b/main.py
@@ -108,7 +108,10 @@ def on_signal_caught(signum, frame=None):
 
     def on_configure_tray(tray_icon, item):
         logger.info("Configure from tray icon")
-        subprocess.Popen(os.path.join(os.getcwd(), "configure.py"), shell=True)
+        kwargs = {}
+        if hasattr(subprocess, "DETACHED_PROCESS"):
+            kwargs["creationflags"] = subprocess.DETACHED_PROCESS
+        subprocess.Popen([sys.executable, os.path.join(os.getcwd(), "configure.py")], **kwargs)
         clean_stop(tray_icon)