diff --git a/features/frameworks/nanostack-libservice/mbed-client-libservice/ip6string.h b/features/frameworks/nanostack-libservice/mbed-client-libservice/ip6string.h
index 0f3cec5613..34ee097b34 100644
--- a/features/frameworks/nanostack-libservice/mbed-client-libservice/ip6string.h
+++ b/features/frameworks/nanostack-libservice/mbed-client-libservice/ip6string.h
@@ -57,7 +57,7 @@ uint_fast8_t ip6_prefix_tos(const void *prefix, uint_fast8_t prefix_len, char *p
  * IPv4 tunneling addresses are not covered.
  *
  * \param ip6addr IPv6 address in string format.
- * \param len Lenght of ipv6 string, maximum of 41.
+ * \param len Length of ipv6 string, maximum of 41.
  * \param dest buffer for address. MUST be 16 bytes. Filled with 0 on error.
  * \return boolean set to true if conversion succeed, false if it didn't
  */