diff --git a/src/display/api.js b/src/display/api.js
index ca192afe4..969d6c62a 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -2439,6 +2439,9 @@ var InternalRenderTask = (function InternalRenderTaskClosure() {
     cancel: function InternalRenderTask_cancel() {
       this.running = false;
       this.cancelled = true;
+      if (this.gfx) {
+        this.gfx.endDrawing();
+      }
       if (this._canvas) {
         canvasInRendering.delete(this._canvas);
       }