diff --git a/docs/_static/solution-diagram.mmd b/docs/_static/solution-diagram.mmd
index 4ee2151..9473546 100644
--- a/docs/_static/solution-diagram.mmd
+++ b/docs/_static/solution-diagram.mmd
@@ -1,3 +1,5 @@
+%%{init: {'theme':'default'}}%%
+
flowchart LR
Z[Zulip]
diff --git a/docs/assets/images/solution-diagram.svg b/docs/assets/images/solution-diagram.svg
old mode 100755
new mode 100644
index 8a24d33..16eb40c
--- a/docs/assets/images/solution-diagram.svg
+++ b/docs/assets/images/solution-diagram.svg
@@ -1 +1 @@
-
\ No newline at end of file
+
\ No newline at end of file