diff --git a/src/add-ons/kernel/file_systems/bfs/Volume.cpp b/src/add-ons/kernel/file_systems/bfs/Volume.cpp
index 6307b8e12d..02839b5a9a 100644
--- a/src/add-ons/kernel/file_systems/bfs/Volume.cpp
+++ b/src/add-ons/kernel/file_systems/bfs/Volume.cpp
@@ -699,6 +699,10 @@ Volume::Initialize(int fd, const char* name, uint32 blockSize,
 		if (status < B_OK)
 			return status;
 
+		status = index.Create(transaction, "BEOS:APP_SIG", B_STRING_TYPE);
+		if (status < B_OK)
+			return status;
+
 		status = index.Create(transaction, "last_modified", B_INT64_TYPE);
 		if (status < B_OK)
 			return status;