diff --git a/library/x509_csr.c b/library/x509_csr.c
index a6fe581..a4b8ad7 100644
--- a/library/x509_csr.c
+++ b/library/x509_csr.c
@@ -40,6 +40,9 @@
 
 #include "polarssl/x509_csr.h"
 #include "polarssl/oid.h"
+
+#include <string.h>
+
 #if defined(POLARSSL_PEM_PARSE_C)
 #include "polarssl/pem.h"
 #endif
@@ -47,13 +50,11 @@
 #if defined(POLARSSL_PLATFORM_C)
 #include "polarssl/platform.h"
 #else
+#include <stdlib.h>
 #define polarssl_malloc     malloc
 #define polarssl_free       free
 #endif
 
-#include <string.h>
-#include <stdlib.h>
-
 #if defined(POLARSSL_FS_IO) || defined(EFIX64) || defined(EFI32)
 #include <stdio.h>
 #endif