diff --git a/tools/releasetools/edify_generator.py b/tools/releasetools/edify_generator.py
index 012c06a..c7bca49 100644
--- a/tools/releasetools/edify_generator.py
+++ b/tools/releasetools/edify_generator.py
@@ -22,7 +22,8 @@
   used from donut onwards."""
 
   # map recovery.fstab's fs_types to mount/format "partition types"
-  PARTITION_TYPES = { "yaffs2": "MTD", "mtd": "MTD", "ext4": "EMMC" }
+  PARTITION_TYPES = { "yaffs2": "MTD", "mtd": "MTD",
+                      "ext4": "EMMC", "emmc": "EMMC" }
 
   def __init__(self, version, info):
     self.script = []