diff --git a/programs/ssl/ssl_fork_server.c b/programs/ssl/ssl_fork_server.c
index 03112ad..e021ebb 100644
--- a/programs/ssl/ssl_fork_server.c
+++ b/programs/ssl/ssl_fork_server.c
@@ -56,7 +56,7 @@
     !defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_SSL_TLS_C) || \
     !defined(POLARSSL_SSL_SRV_C) || !defined(POLARSSL_NET_C) ||     \
     !defined(POLARSSL_RSA_C) || !defined(POLARSSL_CTR_DRBG_C) ||    \
-    !defined(POLARSSL_X509_PARSE_C)
+    !defined(POLARSSL_X509_PARSE_C) || !defined(POLARSSL_TIMING_C)
 int main( int argc, char *argv[] )
 {
     ((void) argc);
@@ -65,7 +65,8 @@
     printf("POLARSSL_BIGNUM_C and/or POLARSSL_CERTS_C and/or POLARSSL_ENTROPY_C "
            "and/or POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_SRV_C and/or "
            "POLARSSL_NET_C and/or POLARSSL_RSA_C and/or "
-           "POLARSSL_CTR_DRBG_C and/or POLARSSL_X509_PARSE_C not defined.\n");
+           "POLARSSL_CTR_DRBG_C and/or POLARSSL_X509_PARSE_C and/or "
+           "POLARSSL_TIMING_C not defined.\n");
     return( 0 );
 }
 #elif defined(_WIN32)