diff --git a/programs/pkey/dh_client.c b/programs/pkey/dh_client.c
index f9a40b5..5c8470d 100644
--- a/programs/pkey/dh_client.c
+++ b/programs/pkey/dh_client.c
@@ -29,12 +29,14 @@
 #if defined(POLARSSL_PLATFORM_C)
 #include "polarssl/platform.h"
 #else
+#include <stdio.h>
 #define polarssl_printf     printf
 #endif
 
-#include <string.h>
-#include <stdio.h>
-
+#if defined(POLARSSL_AES_C) && defined(POLARSSL_DHM_C) &&\
+    defined(POLARSSL_ENTROPY_C) && defined(POLARSSL_NET_C) &&\
+    defined(POLARSSL_RSA_C) && defined(POLARSSL_SHA256_C) &&\
+    defined(POLARSSL_FS_IO) && defined(POLARSSL_CTR_DRBG_C)
 #include "polarssl/net.h"
 #include "polarssl/aes.h"
 #include "polarssl/dhm.h"
@@ -43,6 +45,10 @@
 #include "polarssl/entropy.h"
 #include "polarssl/ctr_drbg.h"
 
+#include <stdio.h>
+#include <string.h>
+#endif
+
 #define SERVER_NAME "localhost"
 #define SERVER_PORT 11999