diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 813b2c6..79b218f 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -539,7 +539,7 @@
 
 
 def GetBootableImage(name, prebuilt_name, unpack_dir, tree_subdir,
-                     info_dict=None, system_img_path=None):
+                     info_dict=None):
   """Return a File object with the desired bootable image.
 
   Look for it in 'unpack_dir'/BOOTABLE_IMAGES under the name 'prebuilt_name',