diff --git a/coords.go b/common/coords.go
similarity index 77%
rename from coords.go
rename to common/coords.go
index a9120f1..8b33b33 100644
--- a/coords.go
+++ b/common/coords.go
@@ -2,11 +2,11 @@
 // Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
-package main
+package common
 
 import "strconv"
 
 // Constructs a database key out of byte slice.
-func bytes2pos(key []byte) (pos int64, err error) {
+func DecodePosFromBytes(key []byte) (pos int64, err error) {
 	return strconv.ParseInt(string(key), 10, 64)
 }
diff --git a/sqlite.go b/sqlite.go
index 27f70c1..2984eb0 100644
--- a/sqlite.go
+++ b/sqlite.go
@@ -10,6 +10,8 @@ import (
 	"sync"
 
 	_ "github.com/mattn/go-sqlite3"
+
+	"bitbucket.org/s_l_teichmann/mtredisalize/common"
 )
 
 var globalLock sync.RWMutex
@@ -137,7 +139,7 @@ func (ss *SqliteSession) txStmt(stmt *sql.Stmt) *sql.Stmt {
 
 func (ss *SqliteSession) Fetch(hash, key []byte) (data []byte, err error) {
 	var pos int64
-	if pos, err = bytes2pos(key); err != nil {
+	if pos, err = common.DecodePosFromBytes(key); err != nil {
 		return
 	}
 
@@ -159,7 +161,7 @@ func (ss *SqliteSession) InTransaction() bool {
 
 func (ss *SqliteSession) Store(hash, key, value []byte) (exists bool, err error) {
 	var pos int64
-	if pos, err = bytes2pos(key); err != nil {
+	if pos, err = common.DecodePosFromBytes(key); err != nil {
 		return
 	}