diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
index d047d71..a4095da 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -33,7 +33,7 @@
 #define polarssl_printf     printf
 #endif
 
-#if defined(POLARSSL_PK_WRITE_C) && defined(POLARSSL_FS_IO) &&\
+#if defined(POLARSSL_PK_WRITE_C) && defined(POLARSSL_FS_IO) && \
     defined(POLARSSL_ENTROPY_C) && defined(POLARSSL_CTR_DRBG_C)
 #include "polarssl/error.h"
 #include "polarssl/pk.h"