diff --git a/src/include/miscadmin.h b/src/include/miscadmin.h
index 61a24c2..0467a8e 100644
*** a/src/include/miscadmin.h
--- b/src/include/miscadmin.h
*************** extern void ProcessInterrupts(void);
*** 98,104 ****

  #define CHECK_FOR_INTERRUPTS() \
  do { \
! 	if (InterruptPending) \
  		ProcessInterrupts(); \
  } while(0)
  #else							/* WIN32 */
--- 98,104 ----

  #define CHECK_FOR_INTERRUPTS() \
  do { \
! 	if (unlikely(InterruptPending)) \
  		ProcessInterrupts(); \
  } while(0)
  #else							/* WIN32 */
*************** do { \
*** 107,113 ****
  do { \
  	if (UNBLOCKED_SIGNAL_QUEUE()) \
  		pgwin32_dispatch_queued_signals(); \
! 	if (InterruptPending) \
  		ProcessInterrupts(); \
  } while(0)
  #endif							/* WIN32 */
--- 107,113 ----
  do { \
  	if (UNBLOCKED_SIGNAL_QUEUE()) \
  		pgwin32_dispatch_queued_signals(); \
! 	if (unlikely(InterruptPending)) \
  		ProcessInterrupts(); \
  } while(0)
  #endif							/* WIN32 */