diff --git a/demo/js/index.js b/demo/js/index.js
index 1683fad..0dfb227 100644
--- a/demo/js/index.js
+++ b/demo/js/index.js
@@ -12621,7 +12621,7 @@ function createTexture(gl, source, i) {
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
 
-  updateTexture(gl, source);
+  if(source != null) updateTexture(gl, source);
 
   return texture;
 }
diff --git a/demo/js/index2.js b/demo/js/index2.js
index 63f8e75..3c82ec5 100644
--- a/demo/js/index2.js
+++ b/demo/js/index2.js
@@ -4814,7 +4814,7 @@ function createTexture(gl, source, i) {
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
 
-  updateTexture(gl, source);
+  if(source != null) updateTexture(gl, source);
 
   return texture;
 }
diff --git a/demo/js/index3.js b/demo/js/index3.js
index 0fbcc1c..ae89e9e 100644
--- a/demo/js/index3.js
+++ b/demo/js/index3.js
@@ -4832,7 +4832,7 @@ function createTexture(gl, source, i) {
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
 
-  updateTexture(gl, source);
+  if(source != null) updateTexture(gl, source);
 
   return texture;
 }