diff --git a/src/frontend/signal_handler.c b/src/frontend/signal_handler.c
index 6a53c633f..6e3a26164 100644
--- a/src/frontend/signal_handler.c
+++ b/src/frontend/signal_handler.c
@@ -68,7 +68,7 @@ ft_sigintr_cleanup(void)
     cp_resetcontrol();
 }
 
-
+unsigned int interrupt_counter ;
 /*  invoke this function upon keyboard interrupt  */
 RETSIGTYPE
 ft_sigintr(void)