diff --git a/contract/command.go b/contract/command.go
index ec8764e..61b862f 100644
--- a/contract/command.go
+++ b/contract/command.go
@@ -1,11 +1,12 @@
 package contract
 
-// Run is a function that executes nft command.
-type Run func(arg ...string) error
+type CommandRun interface {
+	// Run executes nft command.
+	Run(arg ...string) error
+}
 
 type Command interface {
-	// Run nft command.
-	Run(arg ...string) error
+	CommandRun
 
 	// RunWithOutput Run nft command with output.
 	RunWithOutput(arg ...string) (string, error)