diff --git a/doc/design/images/multiple_reader.png b/doc/fluid/design/concepts/images/multiple_reader.png
similarity index 100%
rename from doc/design/images/multiple_reader.png
rename to doc/fluid/design/concepts/images/multiple_reader.png
diff --git a/doc/design/images/readers.png b/doc/fluid/design/concepts/images/readers.png
similarity index 100%
rename from doc/design/images/readers.png
rename to doc/fluid/design/concepts/images/readers.png