diff --git a/printrun/gui.py b/printrun/gui.py
index 09f7908..7e261d5 100644
--- a/printrun/gui.py
+++ b/printrun/gui.py
@@ -223,7 +223,7 @@ class MainToolbar(wx.BoxSizer):
 
         root.serialport = wx.ComboBox(root.panel, -1,
                 choices = root.scanserial(),
-                style = wx.CB_DROPDOWN, size = (100, 25))
+                style = wx.CB_DROPDOWN, size = (150, 25))
         root.serialport.SetToolTip(wx.ToolTip("Select Port Printer is connected to"))
         root.rescanports()
         self.Add(root.serialport)