diff --git a/src/core/operations/ChiSquare.mjs b/src/core/operations/ChiSquare.mjs
deleted file mode 100644
index f78574d6..00000000
--- a/src/core/operations/ChiSquare.mjs
+++ /dev/null
@@ -1,54 +0,0 @@
-/**
- * @author n1474335 [n1474335@gmail.com]
- * @copyright Crown Copyright 2017
- * @license Apache-2.0
- */
-
-import Operation from "../Operation.mjs";
-
-/**
- * Chi Square operation
- */
-class ChiSquare extends Operation {
-
-    /**
-     * ChiSquare constructor
-     */
-    constructor() {
-        super();
-
-        this.name = "Chi Square";
-        this.module = "Default";
-        this.description = "Calculates the Chi Square distribution of values.";
-        this.infoURL = "https://wikipedia.org/wiki/Chi-squared_distribution";
-        this.inputType = "ArrayBuffer";
-        this.outputType = "number";
-        this.args = [];
-    }
-
-    /**
-     * @param {ArrayBuffer} input
-     * @param {Object[]} args
-     * @returns {number}
-     */
-    run(input, args) {
-        const data = new Uint8Array(input);
-        const distArray = new Array(256).fill(0);
-        let total = 0;
-
-        for (let i = 0; i < data.length; i++) {
-            distArray[data[i]]++;
-        }
-
-        for (let i = 0; i < distArray.length; i++) {
-            if (distArray[i] > 0) {
-                total += Math.pow(distArray[i] - data.length / 256, 2) / (data.length / 256);
-            }
-        }
-
-        return total;
-    }
-
-}
-
-export default ChiSquare;