diff --git a/library/x509_crt.c b/library/x509_crt.c
index 3cd2a1141..c9177ef81 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -40,7 +40,6 @@
 #include "mbedtls/x509_crt.h"
 #include "mbedtls/oid.h"
 
-#include <stdio.h>
 #include <string.h>
 
 #if defined(MBEDTLS_PEM_PARSE_C)
@@ -50,6 +49,7 @@
 #if defined(MBEDTLS_PLATFORM_C)
 #include "mbedtls/platform.h"
 #else
+#include <stdio.h>
 #include <stdlib.h>
 #define mbedtls_free       free
 #define mbedtls_calloc    calloc