diff --git a/calculate-monitors.patch b/calculate-monitors.patch
new file mode 100644
index 0000000..cd00379
--- /dev/null
+++ b/calculate-monitors.patch
@@ -0,0 +1,22 @@
+diff --git a/toolbars.py b/toolbars.py
+index ca24c2c..9924a00 100644
+--- a/toolbars.py
++++ b/toolbars.py
+@@ -13,6 +13,8 @@ from sugar3.graphics.toolbutton import ToolButton
+ from sugar3.graphics.toggletoolbutton import ToggleToolButton
+ from sugar3.graphics.style import GRID_CELL_SIZE
+ 
++from sugarapp.helpers import PrimaryMonitor
++
+ import logging
+ _logger = logging.getLogger('calc-activity')
+ 
+@@ -383,7 +385,7 @@ class MiscToolbar(Gtk.Toolbar):
+         self.show_all()
+ 
+     def update_layout(self):
+-        if Gdk.Screen.width() < 14 * GRID_CELL_SIZE or \
++        if PrimaryMonitor.width() < 14 * GRID_CELL_SIZE or \
+                 self._target_toolbar is None:
+             target_toolbar = self
+             if self._target_toolbar is not None:
diff --git a/calculate-port.patch b/calculate-port.patch
index c4a8cff..d5782d6 100644
--- a/calculate-port.patch
+++ b/calculate-port.patch
@@ -44,25 +44,3 @@ index 46d02b2..1e8de97 100644
  
          self._sync_hid = None
          self._message_cbs = {}
-diff --git a/toolbars.py b/toolbars.py
-index ca24c2c..9924a00 100644
---- a/toolbars.py
-+++ b/toolbars.py
-@@ -13,6 +13,8 @@ from sugar3.graphics.toolbutton import ToolButton
- from sugar3.graphics.toggletoolbutton import ToggleToolButton
- from sugar3.graphics.style import GRID_CELL_SIZE
- 
-+from sugarapp.helpers import PrimaryMonitor
-+
- import logging
- _logger = logging.getLogger('calc-activity')
- 
-@@ -383,7 +385,7 @@ class MiscToolbar(Gtk.Toolbar):
-         self.show_all()
- 
-     def update_layout(self):
--        if Gdk.Screen.width() < 14 * GRID_CELL_SIZE or \
-+        if PrimaryMonitor.width() < 14 * GRID_CELL_SIZE or \
-                 self._target_toolbar is None:
-             target_toolbar = self
-             if self._target_toolbar is not None:
diff --git a/org.sugarlabs.Calculate.json b/org.sugarlabs.Calculate.json
index f28f664..75d501d 100644
--- a/org.sugarlabs.Calculate.json
+++ b/org.sugarlabs.Calculate.json
@@ -35,6 +35,10 @@
                 {
                     "type": "patch",
                     "path": "calculate-info.patch"
+                },
+                {
+                    "type": "patch",
+                    "path": "calculate-monitors.patch"
                 }
             ],
             "post-install": [