diff --git a/libavdevice/dshow_filter.c b/libavdevice/dshow_filter.c
index 4642ac077c..2122c84626 100644
--- a/libavdevice/dshow_filter.c
+++ b/libavdevice/dshow_filter.c
@@ -135,7 +135,7 @@ long WINAPI ff_dshow_filter_JoinFilterGraph(DShowFilter *this, IFilterGraph *gra
 
     this->info.pGraph = graph;
     if (name)
-        wcscpy(this->info.achName, name);
+        wcscpy_s(this->info.achName, sizeof(this->info.achName) / sizeof(wchar_t), name);
 
     return S_OK;
 }