diff --git a/inspector/inspector.go b/inspector/inspector.go
index ca5cade..d1507f7 100644
--- a/inspector/inspector.go
+++ b/inspector/inspector.go
@@ -8,6 +8,9 @@ import (
 	"github.com/bisohns/saido/driver"
 )
 
+// CustomCommand : every custom command must be prefixed by this
+var CustomCommand = `custom`
+
 // Inspector : defines a particular metric supported by a driver
 type Inspector interface {
 	Parse(output string)
@@ -19,14 +22,14 @@ type Inspector interface {
 type NewInspector func(driver *driver.Driver, custom ...string) (Inspector, error)
 
 var inspectorMap = map[string]NewInspector{
-	`disk`:    NewDF,
-	`docker`:  NewDockerStats,
-	`uptime`:  NewUptime,
-	`memory`:  NewMemInfo,
-	`process`: NewProcess,
-	`loadavg`: NewLoadAvg,
-	`tcp`:     NewTcp,
-	`custom`:  NewCustom,
+	`disk`:        NewDF,
+	`docker`:      NewDockerStats,
+	`uptime`:      NewUptime,
+	`memory`:      NewMemInfo,
+	`process`:     NewProcess,
+	`loadavg`:     NewLoadAvg,
+	`tcp`:         NewTcp,
+	CustomCommand: NewCustom,
 	// NOTE: Inactive for now
 	`responsetime`: NewResponseTime,
 }
@@ -34,7 +37,7 @@ var inspectorMap = map[string]NewInspector{
 // Valid : checks if inspector is a valid inspector
 func Valid(name string) bool {
 	for key := range inspectorMap {
-		if name == key || strings.HasPrefix(name, "custom") {
+		if name == key || strings.HasPrefix(name, CustomCommand) {
 			return true
 		}
 	}
@@ -43,7 +46,7 @@ func Valid(name string) bool {
 
 // Init : initializes the specified inspector using name and driver
 func Init(name string, driver *driver.Driver, custom ...string) (Inspector, error) {
-	if strings.HasPrefix(name, "custom") {
+	if strings.HasPrefix(name, CustomCommand) {
 		name = "custom"
 	}
 	val, ok := inspectorMap[name]