diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index f2efd46..3d49114 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -350,13 +350,16 @@
 		addStr("avb_algorithm", algorithm)
 		key := android.PathForModuleSrc(ctx, proptools.String(f.properties.Avb_private_key))
 		addPath("avb_key_path", key)
+		partitionName := proptools.StringDefault(f.properties.Partition_name, f.Name())
+		addStr("partition_name", partitionName)
 		avb_add_hashtree_footer_args := "--do_not_generate_fec"
 		if hashAlgorithm := proptools.String(f.properties.Avb_hash_algorithm); hashAlgorithm != "" {
 			avb_add_hashtree_footer_args += " --hash_algorithm " + hashAlgorithm
 		}
+		securityPatchKey := "com.android.build." + partitionName + ".security_patch"
+		securityPatchValue := ctx.Config().PlatformSecurityPatch()
+		avb_add_hashtree_footer_args += " --prop " + securityPatchKey + ":" + securityPatchValue
 		addStr("avb_add_hashtree_footer_args", avb_add_hashtree_footer_args)
-		partitionName := proptools.StringDefault(f.properties.Partition_name, f.Name())
-		addStr("partition_name", partitionName)
 		addStr("avb_salt", f.salt())
 	}