diff --git a/lib/tls/mbedtls/wrapper/library/ssl_lib.c b/lib/tls/mbedtls/wrapper/library/ssl_lib.c
index 6d3e165f3..ec46fd827 100644
--- a/lib/tls/mbedtls/wrapper/library/ssl_lib.c
+++ b/lib/tls/mbedtls/wrapper/library/ssl_lib.c
@@ -1709,7 +1709,7 @@ _openssl_alpn_to_mbedtls(struct alpn_ctx *ac, char ***palpn_protos)
 	if (!len) {
 		*q++ = '\0';
 		count++;
-		len = *p++;
+		/* len = *p++; */
 		alpn_protos[count] = (char *)q;
 	}
 	alpn_protos[count] = NULL; /* last pointer ends list with NULL */