diff --git a/roadveh_gui.c b/roadveh_gui.c
index 06737a5019..7c246ba5c9 100644
--- a/roadveh_gui.c
+++ b/roadveh_gui.c
@@ -513,7 +513,7 @@ static void DrawRoadDepotWindow(Window *w)
 
 	/* locate the depot struct */
 	for (d = _depots; d->xy != (TileIndex)tile; d++) {
-		assert(d < endof(_depots);
+		assert(d < endof(_depots));
 	}
 
 	SetDParam(0, d->town_index);
diff --git a/ship_gui.c b/ship_gui.c
index e90077aed6..65d4de0c07 100644
--- a/ship_gui.c
+++ b/ship_gui.c
@@ -647,7 +647,7 @@ static void DrawShipDepotWindow(Window *w)
 
 	/* locate the depot struct */
 	for (d = _depots; d->xy != (TileIndex)tile; d++) {
-		assert(d < endof(_depots);
+		assert(d < endof(_depots));
 	}
 
 	SetDParam(0, d->town_index);
diff --git a/train_gui.c b/train_gui.c
index b590eb29b6..d52f233071 100644
--- a/train_gui.c
+++ b/train_gui.c
@@ -334,7 +334,7 @@ static void DrawTrainDepotWindow(Window *w)
 
 	/* locate the depot struct */
 	for (d = _depots; d->xy != (TileIndex)tile; d++) {
-		assert(d < endof(_depots);
+		assert(d < endof(_depots));
 	}
 
 	SetDParam(0, d->town_index);