diff --git a/oxtimelines/timeline.py b/oxtimelines/timeline.py
index 6692496..a5204e8 100644
--- a/oxtimelines/timeline.py
+++ b/oxtimelines/timeline.py
@@ -389,10 +389,11 @@ class Timelines():
         self.full_tile_image = Image.new('RGB', (self.full_tile_w, self.large_tile_h))
 
     def _save_full_tile_image(self, mode):
-        resized = self.large_tile_image[mode].resize((
-            self.full_tile_widths[0], self.large_tile_h
-        ), Image.ANTIALIAS)
-        self.full_tile_image.paste(resized, (self.full_tile_offset, 0))
+        if self.full_tile_widths[0] > 0 and self.large_tile_h > 0:
+            resized = self.large_tile_image[mode].resize((
+                self.full_tile_widths[0], self.large_tile_h
+            ), Image.ANTIALIAS)
+            self.full_tile_image.paste(resized, (self.full_tile_offset, 0))
         self.full_tile_offset += self.full_tile_widths[0]
         self.full_tile_widths = self.full_tile_widths[1:]