diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index a596c26..3c1575b 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -1115,9 +1115,14 @@
 
 
 # map recovery.fstab's fs_types to mount/format "partition types"
-PARTITION_TYPES = { "yaffs2": "MTD", "mtd": "MTD",
-                    "ext4": "EMMC", "emmc": "EMMC",
-                    "f2fs": "EMMC" }
+PARTITION_TYPES = {
+    "yaffs2": "MTD",
+    "mtd": "MTD",
+    "ext4": "EMMC",
+    "emmc": "EMMC",
+    "f2fs": "EMMC",
+    "squashfs": "EMMC"
+}
 
 def GetTypeAndDevice(mount_point, info):
   fstab = info["fstab"]