diff --git a/inception/inception/data/preprocess_imagenet_validation_data.py b/inception/inception/data/preprocess_imagenet_validation_data.py
index 8308277a079..ae1576fff38 100755
--- a/inception/inception/data/preprocess_imagenet_validation_data.py
+++ b/inception/inception/data/preprocess_imagenet_validation_data.py
@@ -76,7 +76,7 @@
     basename = 'ILSVRC2012_val_000%.5d.JPEG' % (i + 1)
     original_filename = os.path.join(data_dir, basename)
     if not os.path.exists(original_filename):
-      print('Failed to find: ' % original_filename)
+      print('Failed to find: %s' % original_filename)
       sys.exit(-1)
     new_filename = os.path.join(data_dir, labels[i], basename)
     os.rename(original_filename, new_filename)