diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index 0c564bd..9d8588c 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -21,13 +21,13 @@
  */
 
 #if !defined(POLARSSL_CONFIG_FILE)
-#include "polarssl/config.h"
+#include "mbedtls/config.h"
 #else
 #include POLARSSL_CONFIG_FILE
 #endif
 
 #if defined(POLARSSL_PLATFORM_C)
-#include "polarssl/platform.h"
+#include "mbedtls/platform.h"
 #else
 #include <stdio.h>
 #define polarssl_fprintf    fprintf
@@ -39,11 +39,11 @@
     defined(POLARSSL_NET_C) && defined(POLARSSL_RSA_C) && \
     defined(POLARSSL_X509_CRT_PARSE_C) && defined(POLARSSL_FS_IO) && \
     defined(POLARSSL_CTR_DRBG_C)
-#include "polarssl/entropy.h"
-#include "polarssl/ctr_drbg.h"
-#include "polarssl/net.h"
-#include "polarssl/ssl.h"
-#include "polarssl/x509.h"
+#include "mbedtls/entropy.h"
+#include "mbedtls/ctr_drbg.h"
+#include "mbedtls/net.h"
+#include "mbedtls/ssl.h"
+#include "mbedtls/x509.h"
 
 #include <stdio.h>
 #include <stdlib.h>