diff --git a/go/ssa/interp/interp_test.go b/go/ssa/interp/interp_test.go
index d2fe6d3e97..28ebf5f805 100644
--- a/go/ssa/interp/interp_test.go
+++ b/go/ssa/interp/interp_test.go
@@ -23,7 +23,6 @@ import (
 	"log"
 	"os"
 	"path/filepath"
-	"runtime"
 	"strings"
 	"testing"
 	"time"