diff --git a/tools/releasetools/merge_target_files.py b/tools/releasetools/merge_target_files.py
index 3b72551..54bb99a 100755
--- a/tools/releasetools/merge_target_files.py
+++ b/tools/releasetools/merge_target_files.py
@@ -395,6 +395,10 @@
       merged_info_dict[key] = '%s %s' % (
         system_info_dict.get(key, ''),
         merged_info_dict.get(key, ''))
+    # Ensure that add_img_to_target_files rebuilds super_empty.img. This flag
+    # may have been set to false in the partial builds to prevent duplicate
+    # building of super.img and super_empty.img.
+    merged_dict['build_super_partition'] = 'true'
 
   output_misc_info_txt = os.path.join(
       output_target_files_temp_dir,