1 files changed, 1 insertions, 1 deletions
diff --git a/win/tclWinChan.c b/win/tclWinChan.c
index 0f17834..a20cb8f 100644
--- a/win/tclWinChan.c
+++ b/win/tclWinChan.c
@@ -1337,7 +1337,7 @@ TclWinOpenFileChannel(
     infoPtr->flags = appendMode;
     infoPtr->handle = handle;
     infoPtr->dirty = 0;
-    wsprintfA(channelName, "file%lx", PTR2INT(infoPtr));
+    sprintf(channelName, "file" TCL_I_MODIFIER "x", (size_t)infoPtr);
 
     infoPtr->channel = Tcl_CreateChannel(&fileChannelType, channelName,
 	    (ClientData) infoPtr, permissions);