diff --git a/src/display/canvas.js b/src/display/canvas.js
index b364a2910..3b18f8098 100644
--- a/src/display/canvas.js
+++ b/src/display/canvas.js
@@ -667,8 +667,6 @@ class CanvasGraphics {
     this.stateStack = [];
     this.pendingClip = null;
     this.pendingEOFill = false;
-    this.res = null;
-    this.xobjs = null;
     this.commonObjs = commonObjs;
     this.objs = objs;
     this.canvasFactory = canvasFactory;