diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index 33edbbb..9c14788 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -368,7 +368,7 @@
     // empty all the old gl textures as they are useless now
     for (var key in utils.BaseTextureCache)
     {
-        utils.BaseTextureCache[key]._glTextures = {};
+        utils.BaseTextureCache[key]._glTextures.length = 0;
     }
 };
 

diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index 33edbbb..9c14788 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -368,7 +368,7 @@
     // empty all the old gl textures as they are useless now
     for (var key in utils.BaseTextureCache)
     {
-        utils.BaseTextureCache[key]._glTextures = {};
+        utils.BaseTextureCache[key]._glTextures.length = 0;
     }
 };
 
diff --git a/src/core/textures/BaseTexture.js b/src/core/textures/BaseTexture.js
index 709b7cf..fe0533c 100644
--- a/src/core/textures/BaseTexture.js
+++ b/src/core/textures/BaseTexture.js
@@ -113,7 +113,7 @@
      * @member {object<number, WebGLTexture>}
      * @private
      */
-    this._glTextures = {};
+    this._glTextures = [];
 
     // if no source passed don't try to load
     if (source)

diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index 33edbbb..9c14788 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -368,7 +368,7 @@
     // empty all the old gl textures as they are useless now
     for (var key in utils.BaseTextureCache)
     {
-        utils.BaseTextureCache[key]._glTextures = {};
+        utils.BaseTextureCache[key]._glTextures.length = 0;
     }
 };
 
diff --git a/src/core/textures/BaseTexture.js b/src/core/textures/BaseTexture.js
index 709b7cf..fe0533c 100644
--- a/src/core/textures/BaseTexture.js
+++ b/src/core/textures/BaseTexture.js
@@ -113,7 +113,7 @@
      * @member {object<number, WebGLTexture>}
      * @private
      */
-    this._glTextures = {};
+    this._glTextures = [];
 
     // if no source passed don't try to load
     if (source)
diff --git a/src/core/textures/RenderTexture.js b/src/core/textures/RenderTexture.js
index 0d132c6..8d7b26b 100644
--- a/src/core/textures/RenderTexture.js
+++ b/src/core/textures/RenderTexture.js
@@ -65,7 +65,6 @@
     var baseTexture = new BaseTexture();
     baseTexture.width = width * resolution;
     baseTexture.height = height * resolution;
-    baseTexture._glTextures = [];
     baseTexture.resolution = resolution;
     baseTexture.scaleMode = scaleMode || CONST.scaleModes.DEFAULT;
     baseTexture.hasLoaded = true;