diff --git a/zephyr/config-mbedtls-libcoap.h b/zephyr/config-mbedtls-libcoap.h
index 3898953676..1d2ccbeaff 100644
--- a/zephyr/config-mbedtls-libcoap.h
+++ b/zephyr/config-mbedtls-libcoap.h
@@ -19,4 +19,38 @@
 #define MBEDTLS_VERSION_C
 #endif /* ! MBEDTLS_VERSION_C */
 
+#if defined(MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
+#ifndef MBEDTLS_CAN_ECDH
+#define MBEDTLS_CAN_ECDH
+#endif /* ! MBEDTLS_CAN_ECDH */
+
+#ifndef MBEDTLS_PK_CAN_ECDSA_SIGN
+#define MBEDTLS_PK_CAN_ECDSA_SIGN
+#endif /* ! MBEDTLS_PK_CAN_ECDSA_SIGN */
+
+#ifndef MBEDTLS_X509_CRT_PARSE_C
+#define MBEDTLS_X509_CRT_PARSE_C
+#endif /* ! MBEDTLS_X509_CRT_PARSE_C */
+#endif /* MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED */
+
+#if defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED)
+#ifndef MBEDTLS_CAN_ECDH
+#define MBEDTLS_CAN_ECDH
+#endif /* ! MBEDTLS_CAN_ECDH */
+
+#ifndef MBEDTLS_RSA_C
+#define MBEDTLS_RSA_C
+#endif /* ! MBEDTLS_RSA_C */
+
+#ifndef MBEDTLS_X509_CRT_PARSE_C
+#define MBEDTLS_X509_CRT_PARSE_C
+#endif /* ! MBEDTLS_X509_CRT_PARSE_C */
+#endif /* MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED */
+
+#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
+#ifndef MBEDTLS_CAN_ECDH
+#define MBEDTLS_CAN_ECDH
+#endif /* ! MBEDTLS_CAN_ECDH */
+#endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */
+
 #endif /* CONFIG_MBEDTLS_LIBCOAP_H */