diff --git a/programs/x509/req_app.c b/programs/x509/req_app.c
index 2058e4c..0b070fc 100644
--- a/programs/x509/req_app.c
+++ b/programs/x509/req_app.c
@@ -33,7 +33,7 @@
 #define polarssl_printf     printf
 #endif
 
-#if defined(POLARSSL_BIGNUM_C) && defined(POLARSSL_RSA_C) &&\
+#if defined(POLARSSL_BIGNUM_C) && defined(POLARSSL_RSA_C) && \
     defined(POLARSSL_X509_CSR_PARSE_C) && defined(POLARSSL_FS_IO)
 #include "polarssl/x509_csr.h"