diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index b98f233..e65fb97 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -34,19 +34,21 @@
 #include "polarssl/config.h"
 
 #include "polarssl/x509write.h"
-#include "polarssl/error.h"
 #include "polarssl/entropy.h"
 #include "polarssl/ctr_drbg.h"
+#include "polarssl/error.h"
 
-#if !defined(POLARSSL_X509_PARSE_C) || !defined(POLARSSL_FS_IO) ||     \
-    !defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_CTR_DRBG_C) || \
+#if !defined(POLARSSL_X509_WRITE_C) || !defined(POLARSSL_X509_PARSE_C) ||   \
+    !defined(POLARSSL_FS_IO) ||                                             \
+    !defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_CTR_DRBG_C) ||        \
     !defined(POLARSSL_ERROR_C)
 int main( int argc, char *argv[] )
 {
     ((void) argc);
     ((void) argv);
 
-    printf( "POLARSSL_X509_PARSE_C and/or POLARSSL_FS_IO and/or "
+    printf( "POLARSSL_X509_WRITE_C and/or POLARSSL_X509_PARSE_C and/or "
+            "POLARSSL_FS_IO and/or "
             "POLARSSL_ENTROPY_C and/or POLARSSL_CTR_DRBG_C and/or "
             "POLARSSL_ERROR_C not defined.\n");
     return( 0 );
@@ -333,6 +335,6 @@
 
     return( ret );
 }
-#endif /* POLARSSL_X509_PARSE_C && POLARSSL_FS_IO &&
+#endif /* POLARSSL_X509_WRITE_C && POLARSSL_X509_PARSE_C && POLARSSL_FS_IO &&
           POLARSSL_ENTROPY_C && POLARSSL_CTR_DRBG_C &&
           POLARSSL_ERROR_C */