diff --git a/doc/grid.png b/doc/grid.png
index 42e65c7..8fb091c 100644
Binary files a/doc/grid.png and b/doc/grid.png differ
diff --git a/roentgen/grid.py b/roentgen/grid.py
index 6a8f619..a1f0eec 100644
--- a/roentgen/grid.py
+++ b/roentgen/grid.py
@@ -147,3 +147,7 @@ class IconCollection:
 
     def __len__(self) -> int:
         return len(self.icons)
+
+    def sort(self) -> None:
+        """Sort icon list."""
+        self.icons = sorted(self.icons)