diff --git a/src/gui/widget/block_grid.cpp b/src/gui/widget/block_grid.cpp
index 99ca6d9..f2259ac 100644
--- a/src/gui/widget/block_grid.cpp
+++ b/src/gui/widget/block_grid.cpp
@@ -30,6 +30,9 @@ namespace {
 
 namespace {
 	int icon_at_coords (nana::point pos, int count, int columns, int w, int h, int spacing) {
+		if (not count)
+			return 0;
+
 		const int& x = pos.x;
 		const int& y = pos.y;
 		const int icon_rows = (count + (columns - 1)) / columns;