diff --git a/libs/control.js b/libs/control.js
index 32c17f4c..d87455ae 100644
--- a/libs/control.js
+++ b/libs/control.js
@@ -2134,6 +2134,7 @@ control.prototype.setCurtain = function(color, time, callback) {
 control.prototype._setCurtain_animate = function (nowColor, color, time, callback) {
     time /= Math.max(core.status.replay.speed, 1)
     var per_time = 10, step = parseInt(time / per_time);
+    if (step <= 0) step = 1;
     var animate = setInterval(function() {
         nowColor = [
             (nowColor[0]*(step-1)+color[0])/step,
diff --git a/libs/events.js b/libs/events.js
index 9e3b2888..16d626b5 100644
--- a/libs/events.js
+++ b/libs/events.js
@@ -2157,6 +2157,7 @@ events.prototype.moveImage = function (code, to, opacityVal, time, callback) {
 
 events.prototype._moveImage_moving = function (name, moveInfo, callback) {
     var per_time = 10, step = 0, steps = parseInt(moveInfo.time / 10);
+    if (steps <= 0) steps = 1;
     var fromX = moveInfo.fromX, fromY = moveInfo.fromY, toX = moveInfo.toX, toY = moveInfo.toY,
         opacity = moveInfo.opacity, toOpacity = moveInfo.toOpacity;
     var currX = fromX, currY = fromY, currOpacity = opacity;
@@ -2211,6 +2212,7 @@ events.prototype.setVolume = function (value, time, callback) {
     var currVolume = core.musicStatus.volume;
     time /= Math.max(core.status.replay.speed, 1);
     var per_time = 10, step = 0, steps = parseInt(time / per_time);
+    if (steps <= 0) steps = 1;
     var fade = setInterval(function () {
         step++;
         set(currVolume + (value - currVolume) * step / steps);