diff --git a/VERSION b/VERSION
index cb0c939..be14282 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.5.2
+0.5.3
diff --git a/thin-provisioning/superblock.cc b/thin-provisioning/superblock.cc
index 1f54b64..32f32de 100644
--- a/thin-provisioning/superblock.cc
+++ b/thin-provisioning/superblock.cc
@@ -1,6 +1,7 @@
 #include "persistent-data/checksum.h"
 #include "persistent-data/errors.h"
 #include "thin-provisioning/superblock.h"
+#include "persistent-data/file_utils.h"
 
 using namespace thin_provisioning;
 using namespace superblock_detail;
@@ -180,6 +181,20 @@ namespace thin_provisioning {
 			visitor.visit(superblock_corruption(e.what()));
 		}
 	}
+
+	block_address find_metadata_snap(string const &path)
+	{
+		superblock_detail::superblock sb =
+			read_superblock(open_bm(path, block_manager<>::READ_ONLY, false), 0);
+		uint64_t ms = sb.metadata_snap_;
+
+		if (!ms) {
+			cerr << "no metadata snapshot found!" << endl;
+			exit(1);
+		}
+
+		return ms;
+	}
 }
 
 //----------------------------------------------------------------
diff --git a/thin-provisioning/superblock.h b/thin-provisioning/superblock.h
index f527a15..dbe733a 100644
--- a/thin-provisioning/superblock.h
+++ b/thin-provisioning/superblock.h
@@ -137,6 +137,9 @@ namespace thin_provisioning {
 
 	void check_superblock(persistent_data::block_manager<>::ptr bm,
 			      superblock_detail::damage_visitor &visitor);
+
+	persistent_data::block_address find_metadata_snap(string const &path);
+
 }
 
 //----------------------------------------------------------------
diff --git a/thin-provisioning/thin_dump.cc b/thin-provisioning/thin_dump.cc
index c302bd0..191acb5 100644
--- a/thin-provisioning/thin_dump.cc
+++ b/thin-provisioning/thin_dump.cc
@@ -39,19 +39,6 @@ struct flags {
 };
 
 namespace {
-	block_address find_metadata_snap(string const &path)
-	{
-		superblock_detail::superblock sb = read_superblock(open_bm(path, block_manager<>::READ_ONLY, false), 0);
-		uint64_t ms = sb.metadata_snap_;
-
-		if (!ms) {
-			cerr << "no metadata snapshot found!" << endl;
-			exit(1);
-		}
-
-		return ms;
-	}
-
 	int dump_(string const &path, ostream &out, string const &format, struct flags &flags,
 		  block_address metadata_snap) {
 		try {