diff --git a/src/GLCanvas.js b/src/GLCanvas.js
index 29d4c993a6706591bd5d2f743cc385c56e56bf8a..c17343b3b5f5efadfc6cb6b604b8bfe1de0f2570 100644
--- a/src/GLCanvas.js
+++ b/src/GLCanvas.js
@@ -46,7 +46,7 @@ class GLCanvas extends Component {
     var defer = {};
     var p = new Promise(function(resolve, reject) {
       defer.resolve = resolve;
-      defer.reject;
+      defer.reject = reject;
     });
     defer.promise = p;
     return defer;