diff --git a/http/routes.go b/http/routes.go
index bdb07b4..0a89aa2 100644
--- a/http/routes.go
+++ b/http/routes.go
@@ -13,7 +13,6 @@ import (
 	"github.com/julienschmidt/httprouter"
 
 	"github.com/chihaya/chihaya/stats"
-	"github.com/chihaya/chihaya/tracker"
 	"github.com/chihaya/chihaya/tracker/models"
 )
 
@@ -91,7 +90,7 @@ func (s *Server) getTorrent(w http.ResponseWriter, r *http.Request, p httprouter
 	}
 
 	torrent, err := conn.FindTorrent(infohash)
-	if err == tracker.ErrTorrentDNE {
+	if err == models.ErrTorrentDNE {
 		return http.StatusNotFound, err
 	} else if err != nil {
 		return http.StatusInternalServerError, err
@@ -144,7 +143,7 @@ func (s *Server) delTorrent(w http.ResponseWriter, r *http.Request, p httprouter
 	}
 
 	err = conn.DeleteTorrent(infohash)
-	if err == tracker.ErrTorrentDNE {
+	if err == models.ErrTorrentDNE {
 		return http.StatusNotFound, err
 	} else if err != nil {
 		return http.StatusInternalServerError, err
@@ -160,7 +159,7 @@ func (s *Server) getUser(w http.ResponseWriter, r *http.Request, p httprouter.Pa
 	}
 
 	user, err := conn.FindUser(p.ByName("passkey"))
-	if err == tracker.ErrUserDNE {
+	if err == models.ErrUserDNE {
 		return http.StatusNotFound, err
 	} else if err != nil {
 		return http.StatusInternalServerError, err
@@ -208,7 +207,7 @@ func (s *Server) delUser(w http.ResponseWriter, r *http.Request, p httprouter.Pa
 	}
 
 	err = conn.DeleteUser(p.ByName("passkey"))
-	if err == tracker.ErrUserDNE {
+	if err == models.ErrUserDNE {
 		return http.StatusNotFound, err
 	} else if err != nil {
 		return http.StatusInternalServerError, err
diff --git a/tracker/announce.go b/tracker/announce.go
index 647ccbe..44c8a04 100644
--- a/tracker/announce.go
+++ b/tracker/announce.go
@@ -23,7 +23,7 @@ func (tkr *Tracker) HandleAnnounce(ann *models.Announce, w Writer) error {
 
 	if tkr.cfg.Whitelist {
 		err = conn.FindClient(ann.ClientID())
-		if err == ErrClientUnapproved {
+		if err == models.ErrClientUnapproved {
 			w.WriteError(err)
 			return nil
 		} else if err != nil {
@@ -34,7 +34,7 @@ func (tkr *Tracker) HandleAnnounce(ann *models.Announce, w Writer) error {
 	var user *models.User
 	if tkr.cfg.Private {
 		user, err = conn.FindUser(ann.Passkey)
-		if err == ErrUserDNE {
+		if err == models.ErrUserDNE {
 			w.WriteError(err)
 			return nil
 		} else if err != nil {
@@ -45,7 +45,7 @@ func (tkr *Tracker) HandleAnnounce(ann *models.Announce, w Writer) error {
 	var torrent *models.Torrent
 	torrent, err = conn.FindTorrent(ann.Infohash)
 	switch {
-	case !tkr.cfg.Private && err == ErrTorrentDNE:
+	case !tkr.cfg.Private && err == models.ErrTorrentDNE:
 		torrent = &models.Torrent{
 			Infohash: ann.Infohash,
 			Seeders:  models.PeerMap{},
@@ -58,7 +58,7 @@ func (tkr *Tracker) HandleAnnounce(ann *models.Announce, w Writer) error {
 		}
 		stats.RecordEvent(stats.NewTorrent)
 
-	case tkr.cfg.Private && err == ErrTorrentDNE:
+	case tkr.cfg.Private && err == models.ErrTorrentDNE:
 		w.WriteError(err)
 		return nil
 
diff --git a/tracker/conn.go b/tracker/conn.go
index fae0734..083c98f 100644
--- a/tracker/conn.go
+++ b/tracker/conn.go
@@ -5,7 +5,6 @@
 package tracker
 
 import (
-	"errors"
 	"fmt"
 	"time"
 
@@ -13,18 +12,7 @@ import (
 	"github.com/chihaya/chihaya/tracker/models"
 )
 
-var (
-	// ErrUserDNE is returned when a user does not exist.
-	ErrUserDNE = errors.New("user does not exist")
-	// ErrTorrentDNE is returned when a torrent does not exist.
-	ErrTorrentDNE = errors.New("torrent does not exist")
-	// ErrClientUnapproved is returned when a clientID is not in the whitelist.
-	ErrClientUnapproved = errors.New("client is not approved")
-	// ErrInvalidPasskey is returned when a passkey is not properly formatted.
-	ErrInvalidPasskey = errors.New("passkey is invalid")
-
-	drivers = make(map[string]Driver)
-)
+var drivers = make(map[string]Driver)
 
 // Driver represents an interface to pool of connections to models used for
 // the tracker.
diff --git a/tracker/memory/conn.go b/tracker/memory/conn.go
index 41bb278..73c0446 100644
--- a/tracker/memory/conn.go
+++ b/tracker/memory/conn.go
@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/chihaya/chihaya/stats"
-	"github.com/chihaya/chihaya/tracker"
 	"github.com/chihaya/chihaya/tracker/models"
 )
 
@@ -28,7 +27,7 @@ func (c *Conn) FindUser(passkey string) (*models.User, error) {
 
 	user, exists := c.users[passkey]
 	if !exists {
-		return nil, tracker.ErrUserDNE
+		return nil, models.ErrUserDNE
 	}
 	return &*user, nil
 }
@@ -39,7 +38,7 @@ func (c *Conn) FindTorrent(infohash string) (*models.Torrent, error) {
 
 	torrent, exists := c.torrents[infohash]
 	if !exists {
-		return nil, tracker.ErrTorrentDNE
+		return nil, models.ErrTorrentDNE
 	}
 	return &*torrent, nil
 }
@@ -50,7 +49,7 @@ func (c *Conn) FindClient(peerID string) error {
 
 	_, ok := c.whitelist[peerID]
 	if !ok {
-		return tracker.ErrClientUnapproved
+		return models.ErrClientUnapproved
 	}
 	return nil
 }
@@ -61,7 +60,7 @@ func (c *Conn) IncrementTorrentSnatches(infohash string) error {
 
 	t, exists := c.torrents[infohash]
 	if !exists {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 	t.Snatches++
 
@@ -74,7 +73,7 @@ func (c *Conn) IncrementUserSnatches(userID string) error {
 
 	u, exists := c.users[userID]
 	if !exists {
-		return tracker.ErrUserDNE
+		return models.ErrUserDNE
 	}
 	u.Snatches++
 
@@ -87,7 +86,7 @@ func (c *Conn) TouchTorrent(infohash string) error {
 
 	t, ok := c.torrents[infohash]
 	if !ok {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 	t.LastAction = time.Now().Unix()
 
@@ -100,7 +99,7 @@ func (c *Conn) AddLeecher(infohash string, p *models.Peer) error {
 
 	t, ok := c.torrents[infohash]
 	if !ok {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 	t.Leechers[p.ID] = *p
 
@@ -113,7 +112,7 @@ func (c *Conn) AddSeeder(infohash string, p *models.Peer) error {
 
 	t, ok := c.torrents[infohash]
 	if !ok {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 	t.Seeders[p.ID] = *p
 
@@ -126,7 +125,7 @@ func (c *Conn) DeleteLeecher(infohash, peerkey string) error {
 
 	t, ok := c.torrents[infohash]
 	if !ok {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 	delete(t.Leechers, peerkey)
 
@@ -139,7 +138,7 @@ func (c *Conn) DeleteSeeder(infohash, peerkey string) error {
 
 	t, ok := c.torrents[infohash]
 	if !ok {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 	delete(t.Seeders, peerkey)
 
@@ -152,7 +151,7 @@ func (c *Conn) PutLeecher(infohash string, p *models.Peer) error {
 
 	t, ok := c.torrents[infohash]
 	if !ok {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 	t.Leechers[p.ID] = *p
 
@@ -165,7 +164,7 @@ func (c *Conn) PutSeeder(infohash string, p *models.Peer) error {
 
 	t, ok := c.torrents[infohash]
 	if !ok {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 	t.Seeders[p.ID] = *p
 
@@ -196,7 +195,7 @@ func (c *Conn) PurgeInactiveTorrent(infohash string) error {
 
 	torrent, exists := c.torrents[infohash]
 	if !exists {
-		return tracker.ErrTorrentDNE
+		return models.ErrTorrentDNE
 	}
 
 	if torrent.PeerCount() == 0 {
diff --git a/tracker/models/models.go b/tracker/models/models.go
index a299594..cf03b54 100644
--- a/tracker/models/models.go
+++ b/tracker/models/models.go
@@ -21,6 +21,18 @@ var (
 	// current state. For example, announcing a "completed" event while
 	// not a leecher or a "stopped" event while not active.
 	ErrBadRequest = errors.New("bad request")
+
+	// ErrUserDNE is returned when a user does not exist.
+	ErrUserDNE = errors.New("user does not exist")
+
+	// ErrTorrentDNE is returned when a torrent does not exist.
+	ErrTorrentDNE = errors.New("torrent does not exist")
+
+	// ErrClientUnapproved is returned when a clientID is not in the whitelist.
+	ErrClientUnapproved = errors.New("client is not approved")
+
+	// ErrInvalidPasskey is returned when a passkey is not properly formatted.
+	ErrInvalidPasskey = errors.New("passkey is invalid")
 )
 
 // Peer is a participant in a swarm.
diff --git a/tracker/scrape.go b/tracker/scrape.go
index 02f3f1a..f5147eb 100644
--- a/tracker/scrape.go
+++ b/tracker/scrape.go
@@ -18,7 +18,7 @@ func (tkr *Tracker) HandleScrape(scrape *models.Scrape, w Writer) (err error) {
 
 	if tkr.cfg.Private {
 		_, err = conn.FindUser(scrape.Passkey)
-		if err == ErrUserDNE {
+		if err == models.ErrUserDNE {
 			w.WriteError(err)
 			return nil
 		} else if err != nil {
@@ -29,7 +29,7 @@ func (tkr *Tracker) HandleScrape(scrape *models.Scrape, w Writer) (err error) {
 	var torrents []*models.Torrent
 	for _, infohash := range scrape.Infohashes {
 		torrent, err := conn.FindTorrent(infohash)
-		if err == ErrTorrentDNE {
+		if err == models.ErrTorrentDNE {
 			w.WriteError(err)
 			return nil
 		} else if err != nil {