Rename include directory to mbedtls
diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index ce1a072..75c8d30 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -1,5 +1,5 @@
 /* BEGIN_HEADER */
-#include "polarssl/bignum.h"
+#include "mbedtls/bignum.h"
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES