diff --git a/diagnostics.go b/diagnostics.go
index 6ad6e16b1..8bdcdef3c 100644
--- a/diagnostics.go
+++ b/diagnostics.go
@@ -37,8 +37,8 @@ type versionResponse struct {
 	Message string `json:"message"`
 }
 
-// DiagnosticsCollector represents a collector/sender of diagnostics data.
-type DiagnosticsCollector struct {
+// diagnosticsCollector represents a collector/sender of diagnostics data.
+type diagnosticsCollector struct {
 	mu          sync.Mutex
 	host        string
 	VersionURL  string
@@ -57,8 +57,8 @@ type DiagnosticsCollector struct {
 }
 
 // NewDiagnosticsCollector returns a new DiagnosticsCollector given an addr in the format "hostname:port".
-func NewDiagnosticsCollector(host string) *DiagnosticsCollector {
-	return &DiagnosticsCollector{
+func NewDiagnosticsCollector(host string) *diagnosticsCollector {
+	return &diagnosticsCollector{
 		host:       host,
 		VersionURL: defaultVersionCheckURL,
 		startTime:  time.Now().Unix(),
@@ -70,13 +70,13 @@ func NewDiagnosticsCollector(host string) *DiagnosticsCollector {
 }
 
 // SetVersion of locally running Pilosa Cluster to check against master.
-func (d *DiagnosticsCollector) SetVersion(v string) {
+func (d *diagnosticsCollector) SetVersion(v string) {
 	d.version = v
 	d.Set("Version", v)
 }
 
 // Flush sends the current metrics.
-func (d *DiagnosticsCollector) Flush() error {
+func (d *diagnosticsCollector) Flush() error {
 	d.mu.Lock()
 	defer d.mu.Unlock()
 	d.metrics["Uptime"] = (time.Now().Unix() - d.startTime)
@@ -99,7 +99,7 @@ func (d *DiagnosticsCollector) Flush() error {
 }
 
 // CheckVersion of the local build against Pilosa master.
-func (d *DiagnosticsCollector) CheckVersion() error {
+func (d *diagnosticsCollector) CheckVersion() error {
 	var rsp versionResponse
 	req, err := http.NewRequest("GET", d.VersionURL, nil)
 	if err != nil {
@@ -131,7 +131,7 @@ func (d *DiagnosticsCollector) CheckVersion() error {
 }
 
 // compareVersion check version strings.
-func (d *DiagnosticsCollector) compareVersion(value string) error {
+func (d *diagnosticsCollector) compareVersion(value string) error {
 	currentVersion := versionSegments(value)
 	localVersion := versionSegments(d.version)
 
@@ -147,12 +147,12 @@ func (d *DiagnosticsCollector) compareVersion(value string) error {
 }
 
 // Encode metrics maps into the json message format.
-func (d *DiagnosticsCollector) encode() ([]byte, error) {
+func (d *diagnosticsCollector) encode() ([]byte, error) {
 	return json.Marshal(d.metrics)
 }
 
 // Set adds a key value metric.
-func (d *DiagnosticsCollector) Set(name string, value interface{}) {
+func (d *diagnosticsCollector) Set(name string, value interface{}) {
 	switch v := value.(type) {
 	case string:
 		if v == "" {
@@ -166,7 +166,7 @@ func (d *DiagnosticsCollector) Set(name string, value interface{}) {
 }
 
 // logErr logs the error and returns true if an error exists
-func (d *DiagnosticsCollector) logErr(err error) bool {
+func (d *diagnosticsCollector) logErr(err error) bool {
 	if err != nil {
 		d.Logger.Printf("%v", err)
 		return true
@@ -175,7 +175,7 @@ func (d *DiagnosticsCollector) logErr(err error) bool {
 }
 
 // EnrichWithOSInfo adds OS information to the diagnostics payload.
-func (d *DiagnosticsCollector) EnrichWithOSInfo() {
+func (d *diagnosticsCollector) EnrichWithOSInfo() {
 	uptime, err := d.server.systemInfo.Uptime()
 	if !d.logErr(err) {
 		d.Set("HostUptime", uptime)
@@ -199,7 +199,7 @@ func (d *DiagnosticsCollector) EnrichWithOSInfo() {
 }
 
 // EnrichWithMemoryInfo adds memory information to the diagnostics payload.
-func (d *DiagnosticsCollector) EnrichWithMemoryInfo() {
+func (d *diagnosticsCollector) EnrichWithMemoryInfo() {
 	memFree, err := d.server.systemInfo.MemFree()
 	if !d.logErr(err) {
 		d.Set("MemFree", memFree)
@@ -215,7 +215,7 @@ func (d *DiagnosticsCollector) EnrichWithMemoryInfo() {
 }
 
 // EnrichWithSchemaProperties adds schema info to the diagnostics payload.
-func (d *DiagnosticsCollector) EnrichWithSchemaProperties() {
+func (d *diagnosticsCollector) EnrichWithSchemaProperties() {
 	var numShards uint64
 	numFields := 0
 	numIndexes := 0
diff --git a/server.go b/server.go
index 3adf3bb50..38c8d9426 100644
--- a/server.go
+++ b/server.go
@@ -50,7 +50,7 @@ type Server struct {
 	holder          *Holder
 	cluster         *cluster
 	translateFile   *TranslateFile
-	diagnostics     *DiagnosticsCollector
+	diagnostics     *diagnosticsCollector
 	executor        *executor
 	hosts           []string
 	clusterDisabled bool