diff --git a/C/sysbits.c b/C/sysbits.c
index e35cf19d7..a5f54a447 100755
--- a/C/sysbits.c
+++ b/C/sysbits.c
@@ -471,7 +471,7 @@ sub_utime(FILETIME t1, FILETIME t2)
 #endif
 
 UInt
-Yap_cputime ( USES_REGS1 )
+Yap_cputime ( void )
 {
   HANDLE hProcess = GetCurrentProcess();
   FILETIME CreationTime, ExitTime, KernelTime, UserTime;
@@ -1775,6 +1775,7 @@ ReceiveSignal (int s)
 #if (_MSC_VER || defined(__MINGW32__))
 static BOOL WINAPI
 MSCHandleSignal(DWORD dwCtrlType) {
+  CACHE_REGS
   if (LOCAL_InterruptsDisabled) {
     return FALSE;
   }