diff --git a/include/common/time.h b/include/common/time.h
index 588180d..5d86ad5 100644
--- a/include/common/time.h
+++ b/include/common/time.h
@@ -50,6 +50,7 @@
 #define SETNOW(a)		(*a=now)
 
 extern unsigned int   curr_sec_ms;      /* millisecond of current second (0..999) */
+extern unsigned int   ms_left_scaled;   /* milliseconds left for current second (0..2^32-1) */
 extern unsigned int   curr_sec_ms_scaled;  /* millisecond of current second (0..2^32-1) */
 extern unsigned int   now_ms;           /* internal date in milliseconds (may wrap) */
 extern unsigned int   samp_time;        /* total elapsed time over current sample */