diff --git a/briar-core/src/main/java/org/briarproject/briar/socialbackup/BackupPayloadDecoder.java b/briar-core/src/main/java/org/briarproject/briar/socialbackup/BackupPayloadDecoder.java
new file mode 100644
index 000000000..d48b8246d
--- /dev/null
+++ b/briar-core/src/main/java/org/briarproject/briar/socialbackup/BackupPayloadDecoder.java
@@ -0,0 +1,4 @@
+package org.briarproject.briar.socialbackup;
+
+public interface BackupPayloadDecoder {
+}
diff --git a/briar-core/src/main/java/org/briarproject/briar/socialbackup/SocialBackup.java b/briar-core/src/main/java/org/briarproject/briar/socialbackup/SocialBackup.java
new file mode 100644
index 000000000..01c2cddab
--- /dev/null
+++ b/briar-core/src/main/java/org/briarproject/briar/socialbackup/SocialBackup.java
@@ -0,0 +1,4 @@
+package org.briarproject.briar.socialbackup;
+
+public class SocialBackup {
+}