diff --git a/modules/contrib/src/inputoutput.cpp b/modules/contrib/src/inputoutput.cpp
index d6d514f5b8..37510c666e 100644
--- a/modules/contrib/src/inputoutput.cpp
+++ b/modules/contrib/src/inputoutput.cpp
@@ -137,7 +137,7 @@ namespace cv
                         char* fname;
                     #ifdef HAVE_WINRT
                         char fname_tmp[MAX_PATH];
-                        size_t copied = wcstombs(fname, FindFileData.cFileName, MAX_PATH);
+                        size_t copied = wcstombs(fname_tmp, FindFileData.cFileName, MAX_PATH);
                         CV_Assert((copied != MAX_PATH) && (copied != (size_t)-1));
                         fname = fname_tmp;
                     #else