diff --git a/DCPCrypt/Hashes/DCPsha512.pas b/DCPCrypt/Hashes/DCPsha512.pas
index ca763970..c2041036 100644
--- a/DCPCrypt/Hashes/DCPsha512.pas
+++ b/DCPCrypt/Hashes/DCPsha512.pas
@@ -25,6 +25,7 @@
 unit DCPsha512;
 
 {$INCLUDE '..\jedi.inc'}
+{$WARN COMBINING_SIGNED_UNSIGNED64 OFF}
 
 interface
 uses
diff --git a/DCPCrypt/Hashes/DCPtiger.pas b/DCPCrypt/Hashes/DCPtiger.pas
index b8b21ee5..2353ffc7 100644
--- a/DCPCrypt/Hashes/DCPtiger.pas
+++ b/DCPCrypt/Hashes/DCPtiger.pas
@@ -25,6 +25,7 @@
 unit DCPtiger;
 
 {$INCLUDE '..\jedi.inc'}
+{$WARN COMBINING_SIGNED_UNSIGNED64 OFF}
 
 interface
 uses