diff --git a/website/docs/language/functions/textdecodebase64.mdx b/website/docs/language/functions/textdecodebase64.mdx
index 53ac82dab5..78bebbfc39 100644
--- a/website/docs/language/functions/textdecodebase64.mdx
+++ b/website/docs/language/functions/textdecodebase64.mdx
@@ -13,6 +13,10 @@ description: >-
 `textdecodebase64` function decodes a string that was previously Base64-encoded,
 and then interprets the result as characters in a specified character encoding.
 
+```hcl
+textdecodebase64(string, encoding_name)
+```
+
 OpenTofu uses the "standard" Base64 alphabet as defined in
 [RFC 4648 section 4](https://tools.ietf.org/html/rfc4648#section-4).
 
diff --git a/website/docs/language/functions/textencodebase64.mdx b/website/docs/language/functions/textencodebase64.mdx
index ac87df6f60..bed5e8bfe6 100644
--- a/website/docs/language/functions/textencodebase64.mdx
+++ b/website/docs/language/functions/textencodebase64.mdx
@@ -14,7 +14,7 @@ specified character encoding, returning the result base64 encoded because
 OpenTofu language strings are always sequences of unicode characters.
 
 ```hcl
-substr(string, encoding_name)
+textencodebase64(string, encoding_name)
 ```
 
 OpenTofu uses the "standard" Base64 alphabet as defined in