diff --git a/types/index.d.ts b/types/index.d.ts
index 5c0c3ca40..3f8a3ff1c 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -2204,7 +2204,6 @@ declare namespace math {
      * when number is > 1.
      */
     pickRandom<T>(array: T[]): T
-    pickRandom<T>(array: T[], number: 1, weights?: number[]): T
     pickRandom<T>(array: T[], number: number): T[]
     pickRandom<T>(array: T[], number: number, weights: number[]): T[]
 
@@ -5525,7 +5524,6 @@ declare namespace math {
      * @param weights An array of ints or floats
      */
     pickRandom<T>(array: T[]): MathJsChain<T>
-    pickRandom<T>(array: T[], number: 1, weights?: number[]): MathJsChain<T>
     pickRandom<T>(array: T[], number: number): MathJsChain<T[]>
     pickRandom<T>(array: T[], number: number, weights: number[]): MathJsChain<T[]>
 
diff --git a/types/index.ts b/types/index.ts
index 2c7a4e589..06c88feb2 100644
--- a/types/index.ts
+++ b/types/index.ts
@@ -2256,7 +2256,7 @@ Random examples
   expectTypeOf(math.pickRandom(['a', { b: 10 }, 42])).toMatchTypeOf<
     string | number | { b: number }
   >()
-  expectTypeOf(math.pickRandom([1, 2, 3], 1)).toMatchTypeOf<number>()
+  expectTypeOf(math.pickRandom([1, 2, 3])).toMatchTypeOf<number>()
   expectTypeOf(math.pickRandom([1, 2, 3], 2)).toMatchTypeOf<number[]>()
 
   expectTypeOf(math.chain().pickRandom([1, 2, 3], 2)).toMatchTypeOf<MathJsChain<number[]>>()