diff --git a/fsgen/vbmeta_partitions.go b/fsgen/vbmeta_partitions.go
index 11c5759..d146cbb 100644
--- a/fsgen/vbmeta_partitions.go
+++ b/fsgen/vbmeta_partitions.go
@@ -154,8 +154,8 @@
 			// Already handled by a chained vbmeta partition
 			continue
 		}
-		if strings.Contains(partitionType, "ramdisk") || strings.Contains(partitionType, "boot") {
-			// ramdisk is never signed with avb information
+		if strings.Contains(partitionType, "ramdisk") || strings.Contains(partitionType, "boot") || partitionType == "userdata" {
+			// ramdisk and userdata are never signed with avb information
 			// boot partitions just have the avb footer, and don't have a corresponding vbmeta
 			// partition.
 			continue