diff --git a/docs/changes.md b/docs/changes.md
index e89b77d6b..2c4aecb39 100644
--- a/docs/changes.md
+++ b/docs/changes.md
@@ -1,4 +1,7 @@
 # 最新动态
+* 2020/03/28
+  * 修改 progress circle中的内存泄露。
+
 * 2020/03/27
   * 完善 window\_base（感谢尧燊提供补丁）。
   * 完善 main\_loop\_sdl2（感谢尧燊提供补丁）。
diff --git a/src/ext_widgets/progress_circle/progress_circle.c b/src/ext_widgets/progress_circle/progress_circle.c
index be2888f73..ed5f6dfd7 100644
--- a/src/ext_widgets/progress_circle/progress_circle.c
+++ b/src/ext_widgets/progress_circle/progress_circle.c
@@ -176,6 +176,7 @@ static ret_t progress_circle_on_destroy(widget_t* widget) {
   return_value_if_fail(widget != NULL && progress_circle != NULL, RET_BAD_PARAMS);
 
   TKMEM_FREE(progress_circle->unit);
+  TKMEM_FREE(progress_circle->line_cap);
 
   return RET_OK;
 }