Rename key_length in cipher_info
diff --git a/include/mbedtls/pkcs5.h b/include/mbedtls/pkcs5.h
index 9bbdde6..cfd42a2 100644
--- a/include/mbedtls/pkcs5.h
+++ b/include/mbedtls/pkcs5.h
@@ -71,7 +71,7 @@
* \param salt Salt to use when generating key
* \param slen Length of salt
* \param iteration_count Iteration count
- * \param key_length Length of generated key
+ * \param key_length Length of generated key in bytes
* \param output Generated key. Must be at least as big as key_length
*
* \returns 0 on success, or a MBEDTLS_ERR_XXX code if verification fails.