diff --git a/HISTORY b/HISTORY
index 739ef3b..b04497c 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,3 +1,5 @@
+Version 1.08  2014-10-08
+  * sched_thread.c: calculate next_call_time correctly
 
 Version 1.07  2014-09-16
   * increment alloc task buffer
diff --git a/libfastcommon.spec b/libfastcommon.spec
index 9807629..8d3f193 100644
--- a/libfastcommon.spec
+++ b/libfastcommon.spec
@@ -1,5 +1,5 @@
 Name: libfastcommon
-Version: 1.0.7
+Version: 1.0.8
 Release: 1%{?dist}
 Summary: c common functions library extracted from my open source projects FastDFS
 License: GPL
diff --git a/src/sched_thread.c b/src/sched_thread.c
index 58f67f5..7dbb8a8 100644
--- a/src/sched_thread.c
+++ b/src/sched_thread.c
@@ -320,8 +320,10 @@ static void *sched_thread_entrance(void *args)
 		{
 			//fprintf(stderr, "exec task id=%d\n", pCurrent->id);
 			pCurrent->task_func(pCurrent->func_args);
-			pCurrent->next_call_time = g_current_time + \
-						pCurrent->interval;
+            do
+            {
+                pCurrent->next_call_time += pCurrent->interval;
+            } while (pCurrent->next_call_time <= g_current_time);
 			pCurrent = pCurrent->next;
 			exec_count++;
 		}