diff --git a/.whitesource b/.whitesource
new file mode 100644
index 0000000000..f340c5defc
--- /dev/null
+++ b/.whitesource
@@ -0,0 +1,8 @@
+##########################################################
+####    WhiteSource Integration configuration file    ####
+##########################################################
+
+# Configuration #
+#---------------#
+ws.repo.scan=true
+vulnerable.check.run.conclusion.level=failure
diff --git a/tos/lib/timer/VirtualizeTimerC.nc b/tos/lib/timer/VirtualizeTimerC.nc
index 6f6fc577d7..529b11dee0 100644
--- a/tos/lib/timer/VirtualizeTimerC.nc
+++ b/tos/lib/timer/VirtualizeTimerC.nc
@@ -105,6 +105,7 @@ implementation
        runtime cost). */
     uint32_t now = call TimerFrom.getNow();
     int32_t min_remaining = (1UL << 31) - 1; /* max int32_t */
+    int32_t max_int32 = min_remaining;    
     bool min_remaining_isset = FALSE;
     uint16_t num;
 
@@ -119,6 +120,15 @@ implementation
 	    uint32_t elapsed = now - timer->t0;
 	    int32_t remaining = timer->dt - elapsed;
 
+	    /* If the value of timer's destination greater than max int32_t, 
+	       then the virtual timer is ignored to avoid the fact that all 
+	       of other tasks is hard to get runing time and the battery is
+	       quickly exhausted. And the system may crash.*/
+	    if(timer->dt > max_int32) {
+	      dbg("Value error", "The timer's destination value is too high\n");
+	      continue;
+	    }
+
 	    if (remaining < min_remaining)
 	      {
 		min_remaining = remaining;