diff --git a/inst/doc/mmc4.xls b/vignettes/mmc4.xls
similarity index 100%
rename from inst/doc/mmc4.xls
rename to vignettes/mmc4.xls
diff --git a/inst/doc/mmc6.xls b/vignettes/mmc6.xls
similarity index 100%
rename from inst/doc/mmc6.xls
rename to vignettes/mmc6.xls