diff --git a/random.glsl b/random.glsl
index 039e284..d184cc5 100644
--- a/random.glsl
+++ b/random.glsl
@@ -1,4 +1,4 @@
-float random(vec2 co){
-  return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);
+float random(vec2 c){
+  return fract(sin(dot(c.xy ,vec2(12.9898,78.233))) * 43758.5453);
 }
 #pragma glslify: export(random)