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deleted file mode 100644
index 8a74d0b55..000000000
--- a/docs/source/installation/images/k2-v-1.7.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="80" height="20" role="img" aria-label="k2: &gt;= v1.7"><title>k2: &gt;= v1.7</title><linearGradient id="s" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="r"><rect width="80" height="20" rx="3" fill="#fff"/></clipPath><g clip-path="url(#r)"><rect width="23" height="20" fill="#555"/><rect x="23" width="57" height="20" fill="blueviolet"/><rect width="80" height="20" fill="url(#s)"/></g><g fill="#fff" text-anchor="middle" font-family="Verdana,Geneva,DejaVu Sans,sans-serif" text-rendering="geometricPrecision" font-size="110"><text aria-hidden="true" x="125" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="130">k2</text><text x="125" y="140" transform="scale(.1)" fill="#fff" textLength="130">k2</text><text aria-hidden="true" x="505" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="470">&gt;= v1.7</text><text x="505" y="140" transform="scale(.1)" fill="#fff" textLength="470">&gt;= v1.7</text></g></svg>
diff --git a/docs/source/installation/index.rst b/docs/source/installation/index.rst
index e269cae57..f960033e8 100644
--- a/docs/source/installation/index.rst
+++ b/docs/source/installation/index.rst
@@ -1,4 +1,4 @@
-9. _install icefall:
+.. _install icefall:
 
 Installation
 ============