diff --git a/src/frame.cpp b/src/frame.cpp
index f18e2c8..221b8fc 100644
--- a/src/frame.cpp
+++ b/src/frame.cpp
@@ -70,7 +70,7 @@ try {
 		singletonFrame = this;
 		SetIcon(wxICON(AAArho));
 		sqlite3_init();
-		if (sodium_init() == -1) {
+		if (sodium_init() < 0) {
 			szError = "Fatal Error:  Encryption library did not init.";
 			errorCode = 6;
 			//		Cannot log the error, because logging not set up yet, so logging itself causes an exception
diff --git a/src/ristretto255.h b/src/ristretto255.h
index 377f129..6ee40a4 100644
--- a/src/ristretto255.h
+++ b/src/ristretto255.h
@@ -494,7 +494,14 @@ namespace ristretto255 {
 			return u;
 		}
 		else {
-			return u << ro::serialize(j);
+			auto sj = ro::serialize(j);
+			int i = crypto_generichash_blake2b_update(
+				&u.st,
+				&sj[0],
+				sj.size()
+			);
+			if (i) throw HashReuseException();
+			return u;
 		}
 	}
 
diff --git a/src/stdafx.h b/src/stdafx.h
index 633c3f9..d32b46b 100644
--- a/src/stdafx.h
+++ b/src/stdafx.h
@@ -79,7 +79,7 @@ std::span<uint8_t>& operator^=(std::span<byte>&, byte *);
 #ifdef __WXMSW__
     #include <wx/msw/msvcrt.h>      // redefines the new() operator
 #endif
-#define SODIUM_STATIC
+#define SODIUM_STATIC 1
 #include <sodium.h>
 #include <mpir.h>
 #pragma comment(lib, "libsodium.lib")
@@ -98,6 +98,7 @@ enum MyIDs {
 	myID_MAINFRAME_PANEL, myID_TESTWINDOW, myID_WELCOME_TO_ROCOIN, myID_WALLET_UI,
 	mID_CLOSE_WALLET, myID_MYEXIT
 };
+
 #include "localization.h"
 #include "db_accessors.h"
 #include "app.h"