diff --git a/src/rail_gui.cpp b/src/rail_gui.cpp
index d091e11c1d..a90b9c27eb 100644
--- a/src/rail_gui.cpp
+++ b/src/rail_gui.cpp
@@ -1473,33 +1473,33 @@ public:
 /** Widget definition of the build signal window */
 static const Widget _signal_builder_widgets[] = {
 {   WWT_CLOSEBOX,   RESIZE_NONE,  COLOUR_DARK_GREEN,   0,  10,   0,  13, STR_00C5,               STR_018B_CLOSE_WINDOW},                 // BSW_CLOSEBOX
-{    WWT_CAPTION,   RESIZE_NONE,  COLOUR_DARK_GREEN,  11, 152,   0,  13, STR_SIGNAL_SELECTION,   STR_018C_WINDOW_TITLE_DRAG_THIS},       // BSW_CAPTION
+{    WWT_CAPTION,   RESIZE_NONE,  COLOUR_DARK_GREEN,  11, 153,   0,  13, STR_SIGNAL_SELECTION,   STR_018C_WINDOW_TITLE_DRAG_THIS},       // BSW_CAPTION
 
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,   0,  21,  14,  40, STR_NULL,               STR_BUILD_SIGNAL_SEMAPHORE_NORM_TIP},   // BSW_SEMAPHORE_NORM
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,  22,  43,  14,  40, STR_NULL,               STR_BUILD_SIGNAL_SEMAPHORE_ENTRY_TIP},  // BSW_SEMAPHORE_ENTRY
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,  44,  65,  14,  40, STR_NULL,               STR_BUILD_SIGNAL_SEMAPHORE_EXIT_TIP},   // BSW_SEMAPHORE_EXIT
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,  66,  87,  14,  40, STR_NULL,               STR_BUILD_SIGNAL_SEMAPHORE_COMBO_TIP},  // BSW_SEMAPHORE_COMBO
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,  88, 109,  14,  40, STR_NULL,               STR_BUILD_SIGNAL_SEMAPHORE_PBS_TIP},    // BSW_SEMAPHORE_PBS
-{      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN, 109, 130,  14,  40, STR_NULL,               STR_BUILD_SIGNAL_SEMAPHORE_PBS_OWAY_TIP},// BSW_SEMAPHORE_PBS_OWAY
+{      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN, 110, 131,  14,  40, STR_NULL,               STR_BUILD_SIGNAL_SEMAPHORE_PBS_OWAY_TIP},// BSW_SEMAPHORE_PBS_OWAY
 
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,   0,  21,  41,  67, STR_NULL,               STR_BUILD_SIGNAL_ELECTRIC_NORM_TIP},    // BSW_ELECTRIC_NORM
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,  22,  43,  41,  67, STR_NULL,               STR_BUILD_SIGNAL_ELECTRIC_ENTRY_TIP},   // BSW_ELECTRIC_ENTRY
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,  44,  65,  41,  67, STR_NULL,               STR_BUILD_SIGNAL_ELECTRIC_EXIT_TIP},    // BSW_ELECTRIC_EXIT
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,  66,  87,  41,  67, STR_NULL,               STR_BUILD_SIGNAL_ELECTRIC_COMBO_TIP},   // BSW_ELECTRIC_COMBO
 {      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,  88, 109,  41,  67, STR_NULL,               STR_BUILD_SIGNAL_ELECTRIC_PBS_TIP},     // BSW_ELECTRIC_PBS
-{      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN, 109, 130,  41,  67, STR_NULL,               STR_BUILD_SIGNAL_ELECTRIC_PBS_OWAY_TIP},// BSW_ELECTRIC_PBS_OWAY
+{      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN, 110, 131,  41,  67, STR_NULL,               STR_BUILD_SIGNAL_ELECTRIC_PBS_OWAY_TIP},// BSW_ELECTRIC_PBS_OWAY
 
-{     WWT_IMGBTN,   RESIZE_NONE,  COLOUR_DARK_GREEN, 131, 152,  14,  40, SPR_IMG_SIGNAL_CONVERT, STR_SIGNAL_CONVERT_TIP},                // BSW_CONVERT
-{      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN, 131, 152,  41,  67, STR_NULL,               STR_DRAG_SIGNALS_DENSITY_TIP},          // BSW_DRAG_SIGNALS_DENSITY
-{ WWT_PUSHIMGBTN,   RESIZE_NONE,  COLOUR_GREY,       133, 141,  54,  65, SPR_ARROW_LEFT,         STR_DRAG_SIGNALS_DENSITY_DECREASE_TIP}, // BSW_DRAG_SIGNALS_DENSITY_DECREASE
-{ WWT_PUSHIMGBTN,   RESIZE_NONE,  COLOUR_GREY,       142, 150,  54,  65, SPR_ARROW_RIGHT,        STR_DRAG_SIGNALS_DENSITY_INCREASE_TIP}, // BSW_DRAG_SIGNALS_DENSITY_INCREASE
+{     WWT_IMGBTN,   RESIZE_NONE,  COLOUR_DARK_GREEN, 132, 153,  14,  40, SPR_IMG_SIGNAL_CONVERT, STR_SIGNAL_CONVERT_TIP},                // BSW_CONVERT
+{      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN, 132, 153,  41,  67, STR_NULL,               STR_DRAG_SIGNALS_DENSITY_TIP},          // BSW_DRAG_SIGNALS_DENSITY
+{ WWT_PUSHIMGBTN,   RESIZE_NONE,  COLOUR_GREY,       134, 142,  54,  65, SPR_ARROW_LEFT,         STR_DRAG_SIGNALS_DENSITY_DECREASE_TIP}, // BSW_DRAG_SIGNALS_DENSITY_DECREASE
+{ WWT_PUSHIMGBTN,   RESIZE_NONE,  COLOUR_GREY,       143, 151,  54,  65, SPR_ARROW_RIGHT,        STR_DRAG_SIGNALS_DENSITY_INCREASE_TIP}, // BSW_DRAG_SIGNALS_DENSITY_INCREASE
 
 {   WIDGETS_END},
 };
 
 /** Signal selection window description */
 static const WindowDesc _signal_builder_desc = {
-	WDP_AUTO, WDP_AUTO, 153, 68, 153, 68,
+	WDP_AUTO, WDP_AUTO, 154, 68, 154, 68,
 	WC_BUILD_SIGNAL, WC_BUILD_TOOLBAR,
 	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
 	_signal_builder_widgets,