diff --git a/bin_steam.sh b/bin_steam.sh
index 49f9d8a..48f4379 100755
--- a/bin_steam.sh
+++ b/bin_steam.sh
@@ -297,7 +297,7 @@ fi
 # Leave a copy of the bootstrap tarball in ~/.steam so that Steam can
 # re-bootstrap itself if required
 if ! cmp -s "$LAUNCHSTEAMBOOTSTRAPFILE" "$LAUNCHSTEAMDIR/bootstrap.tar.xz"; then
-    cp "$LAUNCHSTEAMBOOTSTRAPFILE" "$LAUNCHSTEAMDIR/bootstrap.tar.xz"
+    cp -f "$LAUNCHSTEAMBOOTSTRAPFILE" "$LAUNCHSTEAMDIR/bootstrap.tar.xz"
 fi
 
 # go to the install directory and run the client