diff --git a/src/cmd/linuxkit/pkglib/docker.go b/src/cmd/linuxkit/pkglib/docker.go
index 8581088cb..b467ce8bc 100644
--- a/src/cmd/linuxkit/pkglib/docker.go
+++ b/src/cmd/linuxkit/pkglib/docker.go
@@ -42,7 +42,7 @@ func (dr dockerRunner) command(args ...string) error {
 	if debugDockerCommands {
 		var dct string
 		if dr.dct {
-			dct = " " + dctEnableEnv
+			dct = dctEnableEnv + " "
 		}
 		fmt.Fprintf(os.Stderr, "+ %s%v\n", dct, cmd.Args)
 	}