diff --git a/programs/fuzz/fuzz_dtlsserver.c b/programs/fuzz/fuzz_dtlsserver.c
index 99366ae..529fbbf 100644
--- a/programs/fuzz/fuzz_dtlsserver.c
+++ b/programs/fuzz/fuzz_dtlsserver.c
@@ -47,7 +47,8 @@
     fuzzBufferOffset_t biomemfuzz;
 
     if (initialized == 0) {
-#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
+#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C) && \
+        defined(MBEDTLS_CERTS_C)
         mbedtls_x509_crt_init(&srvcert);
         mbedtls_pk_init(&pkey);
         if (mbedtls_x509_crt_parse(&srvcert, (const unsigned char *) mbedtls_test_srv_crt,