diff --git a/doc/api/crypto.md b/doc/api/crypto.md
index a8a072dd0aa9a8..c12b4a77f64e75 100644
--- a/doc/api/crypto.md
+++ b/doc/api/crypto.md
@@ -1855,8 +1855,7 @@ added: v0.5.0
 -->
 
 * `primeLength` {number}
-* `generator` {number | string | Buffer | TypedArray | DataView} **Default:**
-  `2`
+* `generator` {number} **Default:** `2`
 * Returns: {DiffieHellman}
 
 Creates a `DiffieHellman` key exchange object and generates a prime of