diff -r c3c3d1318130 -r 69dfdb26f600 dialogs/LDPowerRailDialog.py
--- a/dialogs/LDPowerRailDialog.py	Tue Aug 15 17:01:51 2017 +0300
+++ b/dialogs/LDPowerRailDialog.py	Tue Aug 15 22:38:43 2017 +0300
@@ -161,7 +161,7 @@
         # Set graphic element displayed, creating a power rail element
         self.Element = LD_PowerRail(self.Preview,
                 self.GetPowerRailType(),
-                connectors = self.PinNumber.GetValue())
+                connectors=self.PinNumber.GetValue())
 
         # Call BlockPreviewDialog function
         BlockPreviewDialog.RefreshPreview(self)