diff --git a/gopsutil/systeminfo.go b/gopsutil/systeminfo.go
index 3310aeae1..8cdd77778 100644
--- a/gopsutil/systeminfo.go
+++ b/gopsutil/systeminfo.go
@@ -22,15 +22,15 @@ import (
 
 var _ pilosa.SystemInfo = NewSystemInfo()
 
-// SystemInfo is an implementation of pilosa.SystemInfo that uses gopsutil to collect information about the host OS.
-type SystemInfo struct {
+// systemInfo is an implementation of pilosa.systemInfo that uses gopsutil to collect information about the host OS.
+type systemInfo struct {
 	platform  string
 	family    string
 	osVersion string
 }
 
 // Uptime returns the system uptime in seconds.
-func (s *SystemInfo) Uptime() (uptime uint64, err error) {
+func (s *systemInfo) Uptime() (uptime uint64, err error) {
 	hostInfo, err := host.Info()
 	if err != nil {
 		return 0, err
@@ -39,7 +39,7 @@ func (s *SystemInfo) Uptime() (uptime uint64, err error) {
 }
 
 // collectPlatformInfo fetches and caches system platform information.
-func (s *SystemInfo) collectPlatformInfo() error {
+func (s *systemInfo) collectPlatformInfo() error {
 	var err error
 	if s.platform == "" {
 		s.platform, s.family, s.osVersion, err = host.PlatformInformation()
@@ -51,7 +51,7 @@ func (s *SystemInfo) collectPlatformInfo() error {
 }
 
 // Platform returns the system platform.
-func (s *SystemInfo) Platform() (string, error) {
+func (s *systemInfo) Platform() (string, error) {
 	err := s.collectPlatformInfo()
 	if err != nil {
 		return "", err
@@ -60,7 +60,7 @@ func (s *SystemInfo) Platform() (string, error) {
 }
 
 // Family returns the system family.
-func (s *SystemInfo) Family() (string, error) {
+func (s *systemInfo) Family() (string, error) {
 	err := s.collectPlatformInfo()
 	if err != nil {
 		return "", err
@@ -69,7 +69,7 @@ func (s *SystemInfo) Family() (string, error) {
 }
 
 // OSVersion returns the OS Version.
-func (s *SystemInfo) OSVersion() (string, error) {
+func (s *systemInfo) OSVersion() (string, error) {
 	err := s.collectPlatformInfo()
 	if err != nil {
 		return "", err
@@ -78,7 +78,7 @@ func (s *SystemInfo) OSVersion() (string, error) {
 }
 
 // MemFree returns the amount of free memory in bytes.
-func (s *SystemInfo) MemFree() (uint64, error) {
+func (s *systemInfo) MemFree() (uint64, error) {
 	memInfo, err := mem.VirtualMemory()
 	if err != nil {
 		return 0, err
@@ -87,7 +87,7 @@ func (s *SystemInfo) MemFree() (uint64, error) {
 }
 
 // MemTotal returns the amount of total memory in bytes.
-func (s *SystemInfo) MemTotal() (uint64, error) {
+func (s *systemInfo) MemTotal() (uint64, error) {
 	memInfo, err := mem.VirtualMemory()
 	if err != nil {
 		return 0, err
@@ -96,7 +96,7 @@ func (s *SystemInfo) MemTotal() (uint64, error) {
 }
 
 // MemUsed returns the amount of used memory in bytes.
-func (s *SystemInfo) MemUsed() (uint64, error) {
+func (s *systemInfo) MemUsed() (uint64, error) {
 	memInfo, err := mem.VirtualMemory()
 	if err != nil {
 		return 0, err
@@ -105,11 +105,11 @@ func (s *SystemInfo) MemUsed() (uint64, error) {
 }
 
 // KernelVersion returns the kernel version as a string.
-func (s *SystemInfo) KernelVersion() (string, error) {
+func (s *systemInfo) KernelVersion() (string, error) {
 	return host.KernelVersion()
 }
 
 // NewSystemInfo is a constructor for the gopsutil implementation of SystemInfo.
-func NewSystemInfo() *SystemInfo {
-	return &SystemInfo{}
+func NewSystemInfo() *systemInfo {
+	return &systemInfo{}
 }