diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 399dbce..dd7419c 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -484,7 +484,7 @@
      */
     destroy()
     {
-        this.shaderCache = [];
+        this.shaderCache = {};
         this.emptyPool();
     }