diff --git a/lessonscreator/metadata.txt b/lessonscreator/metadata.txt
index b50fd79..bb94819 100644
--- a/lessonscreator/metadata.txt
+++ b/lessonscreator/metadata.txt
@@ -2,9 +2,9 @@
 name=LessonsCreator
 description=Tools to help create lessons for the Lessons plugin
 version=0.1
-qgisMinimumVersion=2.0
+qgisMinimumVersion=3.0
 author=Victor Olaya
 email=volayaf@gmail.com
 website=
 icon=edit.png
-class_name=LessonsCollection
\ No newline at end of file
+class_name=LessonsCollection
diff --git a/lessonscreator/plugin.py b/lessonscreator/plugin.py
index a69022d..a1e4422 100644
--- a/lessonscreator/plugin.py
+++ b/lessonscreator/plugin.py
@@ -13,7 +13,7 @@
 from qgis.PyQt.QtCore import Qt, QTimer
 from qgis.PyQt.QtGui import (QIcon,
                              QKeySequence,
-                             QPixmap,
+                             QScreen,
                              QPainter,
                              QPen,
                              QBrush
@@ -191,7 +191,8 @@ def processFocusChanged(self, old, new):
 
     timer = None
     def _createScreenshot(self, obj, rect):
-        pixmap = QPixmap.grabWindow(obj.winId()).copy()
+        screen = QgsApplication.instance().primaryScreen()
+        pixmap = screen.grabWindow(obj.winId()).copy()
         if rect is not None:
             painter = QPainter()
             painter.begin(pixmap)