diff --git a/scripts/process-images.sh b/scripts/process-images.sh
index 03a07a3..09111f0 100755
--- a/scripts/process-images.sh
+++ b/scripts/process-images.sh
@@ -3,6 +3,8 @@
 IMAGES_DIR="./images"
 WIDTH=320
 
+mkdir -p ./images/thumbnails
+
 for f in ./images/*
 do
   case "$f" in