1 files changed, 2 insertions, 0 deletions
diff --git a/lib/https.js b/lib/https.js
index f9011648fb..4c2731ab58 100644
--- a/lib/https.js
+++ b/lib/https.js
@@ -19,6 +19,8 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+'use strict';
+
 var tls = require('tls');
 var url = require('url');
 var http = require('http');