diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index 442a3fb..e18ee42 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -37,7 +37,7 @@
     !defined(MBEDTLS_NET_C)  || !defined(MBEDTLS_TIMING_C) ||             \
     !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) ||        \
     !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_RSA_C) ||      \
-    !defined(MBEDTLS_CERTS_C)
+    !defined(MBEDTLS_CERTS_C) || !defined(MBEDTLS_PEM_PARSE_C)
 int main( void )
 {
     mbedtls_printf( "MBEDTLS_SSL_CLI_C and/or MBEDTLS_SSL_PROTO_DTLS and/or "