diff --git a/docs/registry_test.go b/docs/registry_test.go
index 7f9cc8e4..7442ebc0 100644
--- a/docs/registry_test.go
+++ b/docs/registry_test.go
@@ -171,7 +171,7 @@ func TestGetRemoteImageJSON(t *testing.T) {
 		t.Fatal(err)
 	}
 	assertEqual(t, size, int64(154), "Expected size 154")
-	if len(json) <= 0 {
+	if len(json) == 0 {
 		t.Fatal("Expected non-empty json")
 	}