diff --git a/config/otp.dc b/config/otp.dc
index f3d3b6e..895381d 100755
--- a/config/otp.dc
+++ b/config/otp.dc
@@ -95,7 +95,7 @@ dclass TimeManager : DistributedObject {
   serverTime(uint8, int32, uint32);
   setDisconnectReason(uint8) airecv clsend;
   setExceptionInfo(string(0-1024)) airecv clsend;
-  setSignature(string(0-1024), char [16], char [16]) airecv clsend;
+  setSignature(string(0-1024), blob(16), blob(16)) airecv clsend;
   setFrameRate(uint16/10, uint16/1000, uint16, string(0-256), uint32/10, uint32/10, string(0-256), uint16, uint16, uint32/10, uint32/10, uint32/10, uint32, OSInfo, CPUSpeed, uint16, uint16, string(0-256)) airecv clsend;
   setCpuInfo(string(0-1024), string) airecv clsend;
   checkForGarbageLeaks(bool) airecv clsend;