diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 3b92ca4f..811c0130 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -150,7 +150,6 @@ getJasmineRequireObj().requireMatchers = function(jRequire, j$) {
       'toBeTrue',
       'toBeTruthy',
       'toBeUndefined',
-      'toBeNullish',
       'toContain',
       'toEqual',
       'toHaveSize',
@@ -6011,28 +6010,6 @@ getJasmineRequireObj().toBeNull = function() {
   return toBeNull;
 };
 
-getJasmineRequireObj().toBeNullish = function() {
-  /**
-   * {@link expect} the actual value to be `null` or `undefined`.
-   * @function
-   * @name matchers#toBeNullish
-   * @since 5.6.0
-   * @example
-   * expect(result).toBeNullish():
-   */
-  function toBeNullish() {
-    return {
-      compare: function(actual) {
-        return {
-          pass: null === actual || void 0 === actual
-        };
-      }
-    };
-  }
-
-  return toBeNullish;
-};
-
 getJasmineRequireObj().toBePositiveInfinity = function(j$) {
   /**
    * {@link expect} the actual value to be `Infinity` (infinity).