diff --git a/perf/collector_libpfm_test.go b/perf/collector_libpfm_test.go
index 7dbf09f2ed4..c1ef62a836f 100644
--- a/perf/collector_libpfm_test.go
+++ b/perf/collector_libpfm_test.go
@@ -27,8 +27,6 @@ import (
 
 	"golang.org/x/sys/unix"
 
-	"golang.org/x/sys/unix"
-
 	"github.com/stretchr/testify/assert"
 
 	info "github.com/google/cadvisor/info/v1"