diff --git a/data/gui/default/widget/progress_bar_default.cfg b/data/gui/default/widget/progress_bar_default.cfg
index d99371f1b61..a7240acd7f1 100644
--- a/data/gui/default/widget/progress_bar_default.cfg
+++ b/data/gui/default/widget/progress_bar_default.cfg
@@ -6,7 +6,7 @@
 
 [progress_bar_definition]
 	id = "default"
-	description = "an progress_bar."
+	description = "A progress_bar."
 
 	[resolution]
 
@@ -48,7 +48,7 @@
 				[rectangle]
 					x = 2
 					y = 3
-					w = "((width - 4) * 100 / percentage)"
+					w = "(((width - 4) * precentage) / 100)"
 					h = 2
 					border_thickness = 0
 					fill_colour = "79, 103, 123"
@@ -58,7 +58,7 @@
 				[rectangle]
 					x = 2
 					y = 5
-					w = "((width - 4)* 100 / percentage)"
+					w = "(((width - 4) * precentage) / 100)"
 					h = 33
 					border_thickness = 0
 					fill_colour = "21, 53, 80"
@@ -68,7 +68,7 @@
 				[rectangle]
 					x = 2
 					y = 38
-					w = "((width - 4) * 100 / percentage)"
+					w = "(((width - 4) * precentage) / 100)"
 					h = 2
 					border_thickness = 0
 					fill_colour = "10, 26, 40"