diff --git a/crypto/rand/randfile.c b/crypto/rand/randfile.c
index 43053b19b..7468eaa57 100644
--- a/crypto/rand/randfile.c
+++ b/crypto/rand/randfile.c
@@ -129,7 +129,11 @@ int RAND_load_file(const char *file, long bytes)
 		i=fread(buf,1,n,in);
 		if (i <= 0) break;
 		/* even if n != i, use the full array */
+#ifdef PURIFY
+		RAND_add(buf,i,(double)i);
+#else
 		RAND_add(buf,n,(double)i);
+#endif
 		ret+=i;
 		if (bytes > 0)
 			{