diff --git a/rsa-sha1-sign.c b/rsa-sha1-sign.c
index a3eea7a6aed93cadfde959bef3abdee69c4c7454..9fa953a6883231e4682ff01215adc034e82747fa 100644
--- a/rsa-sha1-sign.c
+++ b/rsa-sha1-sign.c
@@ -31,7 +31,7 @@
 
 #include <assert.h>
 
-include "rsa.h"
+#include "rsa.h"
 
 #include "bignum.h"
 #include "pkcs1.h"