diff --git a/crlcore/doc/images/key_k.fig b/crlcore/doc/images/key_k_.fig
similarity index 100%
rename from crlcore/doc/images/key_k.fig
rename to crlcore/doc/images/key_k_.fig
diff --git a/crlcore/doc/images/key_k.png b/crlcore/doc/images/key_k_.png
similarity index 100%
rename from crlcore/doc/images/key_k.png
rename to crlcore/doc/images/key_k_.png