diff --git a/cmd/backive_udev/main.go b/cmd/backive_udev/main.go
index 6c7c9cf..09823c5 100644
--- a/cmd/backive_udev/main.go
+++ b/cmd/backive_udev/main.go
@@ -24,7 +24,7 @@ func main() {
 	for _, e := range os.Environ() {
 		pair := strings.SplitN(e, "=", 2)
 		env[pair[0]] = pair[1]
-		log.Println("%s", e)
+		log.Println(e)
 	}
 
 	c, err := net.Dial("unix", "/tmp/backive/backive.sock")