diff --git a/src/core/lv_obj_scroll.c b/src/core/lv_obj_scroll.c
index f8c7d79020..237c6fb468 100644
--- a/src/core/lv_obj_scroll.c
+++ b/src/core/lv_obj_scroll.c
@@ -18,8 +18,12 @@
  *      DEFINES
  *********************/
 #define MY_CLASS (&lv_obj_class)
-#define SCROLL_ANIM_TIME_MIN    200    /*ms*/
-#define SCROLL_ANIM_TIME_MAX    400    /*ms*/
+#ifndef SCROLL_ANIM_TIME_MIN
+    #define SCROLL_ANIM_TIME_MIN    200    /*ms*/
+#endif
+#ifndef SCROLL_ANIM_TIME_MAX
+    #define SCROLL_ANIM_TIME_MAX    400    /*ms*/
+#endif
 #define SCROLLBAR_MIN_SIZE      (LV_DPX(10))
 
 /**********************