diff --git a/index.html b/index.html
index 9e2d70a4e1fde9f457380aa743cdd7fab1ffd3fa..61945a04b1d1de750294f5ce8a163f3383c5d4e5 100644
--- a/index.html
+++ b/index.html
@@ -440,7 +440,7 @@
                 <img style="width:100%" src="img2.png"/>
                 <br/><br/>
                 To learn more about the math involved, check out the following sources:<br/>
-                <a href="https://pdfs.semanticscholar.org/84b8/c7b7eecf90ebd9d54a51544ca0f8ff93c137.pdf" target="_blank">Real-time ink simulation using a grid-particle method</a> - mixing Eulerian and Lagrangian techniques for fluids<br/>
+                <a href="https://pdfs.semanticscholar.org/84b8/c7b7eecf90ebd9d54a51544ca0f8ff93c137.pdf" target="_blank">Real-time ink simulation using a grid-particle method</a> - mixing Eulerian and Lagrangian techniques for fluids.<br/>
                 <a href="http://http.developer.nvidia.com/GPUGems/gpugems_ch38.html" target="_blank">Fast Fluid Dynamics Simulation on the GPU</a> - a very well written tutorial about programming the Navier-Stokes equations on a GPU.
                 Though not WebGL specific, it was still very useful.<br/>
                 <a href="http://jamie-wong.com/2016/08/05/webgl-fluid-simulation/" target="_blank">Fluid Simulation (with WebGL demo)</a> - this article has some nice, interactive graphics that helped me debug my code.<br/>
diff --git a/js/GPUMath.js b/js/GPUMath.js
index 99c19f8b8fbd5f0bacc108e33984bc839b689aa5..a5b0fb4375af034afbab39201e78c1cab23f3e65 100644
--- a/js/GPUMath.js
+++ b/js/GPUMath.js
@@ -9,13 +9,15 @@ function initGPUMath(){
 
     var canvas = document.getElementById("glcanvas");
     var gl = canvas.getContext("webgl", {antialias:false}) || canvas.getContext("experimental-webgl", {antialias:false});
-    gl.getExtension('OES_texture_float');
+    var floatTextures = gl.getExtension("OES_texture_float");
+    if (!floatTextures) {
+       console.warn("floating point textures are not supported on your system");
+    }
     gl.disable(gl.DEPTH_TEST);
 
     var maxTexturesInFragmentShader = gl.getParameter(gl.MAX_TEXTURE_IMAGE_UNITS);
     console.log(maxTexturesInFragmentShader + " textures max");
 
-
     function GPUMath(){
         this.reset();
     }