diff --git a/include/polarssl/entropy.h b/include/polarssl/entropy.h
index 539e5cb..69d5b3b 100644
--- a/include/polarssl/entropy.h
+++ b/include/polarssl/entropy.h
@@ -31,7 +31,7 @@
 
 #include "config.h"
 
-#include "sha4.h"
+#include "sha512.h"
 #if defined(POLARSSL_HAVEGE_C)
 #include "havege.h"
 #endif