diff --git a/tools/releasetools/sign_target_files_apks.py b/tools/releasetools/sign_target_files_apks.py
index 089d8f745505d632bc4da31f3145d58c141f1a53..39ffc12a6146a0257e52216e88a81416e59e9032 100755
--- a/tools/releasetools/sign_target_files_apks.py
+++ b/tools/releasetools/sign_target_files_apks.py
@@ -534,7 +534,7 @@ def ProcessTargetFiles(input_tf_zip, output_tf_zip, misc_info,
 
   for info in input_tf_zip.infolist():
     filename = info.filename
-    if filename.startswith("IMAGES/"):
+    if filename.startswith("IMAGES/") and not filename.endswith("vendor.img"):
       continue
 
     # Skip OTA-specific images (e.g. split super images), which will be