diff --git a/trunk/c5/osrng.h b/trunk/c5/osrng.h
index 2fa9713c..eb4e6e2d 100644
--- a/trunk/c5/osrng.h
+++ b/trunk/c5/osrng.h
@@ -8,6 +8,7 @@
 #include "randpool.h"
 #include "rng.h"
 #include "aes.h"
+#include "sha.h"
 #include "fips140.h"
 
 NAMESPACE_BEGIN(CryptoPP)