diff --git a/src/mkimage.py b/src/mkimage.py
index 5e0df32..d25e710 100755
--- a/src/mkimage.py
+++ b/src/mkimage.py
@@ -55,7 +55,12 @@ def get_cover_image(image_path):
         ratio = calculate_ratio(tmp_image)
         if ratio < 1:
             candidates.remove(image)
-    chosen_image = random.choice(candidates)
+    try:
+        chosen_image = random.choice(candidates)
+    except IndexError:
+        logging.error("No suitable image found. Exiting.")
+        sys.exit()
+
     return chosen_image
 # def get_cover_image ends here