diff --git a/content_scripts/notify.ts b/content_scripts/notify.ts
index 0e723b52c..d095ee166 100644
--- a/content_scripts/notify.ts
+++ b/content_scripts/notify.ts
@@ -28,6 +28,8 @@
 
 "use strict";
 
+declare var cloneInto: any;
+
 // Make sure we don't pollute the namespace too much.
 namespace TalerNotify {
   const PROTOCOL_VERSION = 1;
diff --git a/gulpfile.js b/gulpfile.js
index a7b58b9b1..40461b27a 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -187,15 +187,15 @@ function concatStreams (/*streams...*/) {
       if (endCount == toMerge.length)
         stream.emit('end');
     })
-  })
+  });
   stream.write = function (data) {
     this.emit('data', data);
-  }
+  };
   stream.destroy = function () {
     toMerge.forEach(function (e) {
       if (e.destroy) e.destroy();
     })
-  }
+  };
   return stream;
 }
 
@@ -329,7 +329,7 @@ function tsconfig(confBase) {
       path: "tsconfig.json",
       contents: new Buffer(x),
     });
-    this.push(f)
+    this.push(f);
     cb();
   });
 }