diff --git a/cli/app/check.go b/cli/app/check.go
index df6b362b..aa41d2ed 100644
--- a/cli/app/check.go
+++ b/cli/app/check.go
@@ -2,7 +2,6 @@ package app
 
 import (
 	"errors"
-	"fmt"
 	"os"
 	"path"
 	"strings"
@@ -54,7 +53,7 @@ var appCheckCommand = &cli.Command{
 
 		if len(missing) > 0 {
 			path := appFiles[appName].Path
-			missingEnvVars := fmt.Sprintf(strings.Join(missing, ", "))
+			missingEnvVars := strings.Join(missing, ", ")
 			logrus.Fatalf("%s is missing %s", path, missingEnvVars)
 		}