diff --git a/core/img/actions/caret-dark.png b/core/img/actions/caret-dark.png
new file mode 100644
index 00000000000..ce7e1e69802
Binary files /dev/null and b/core/img/actions/caret-dark.png differ
diff --git a/core/img/actions/caret-dark.svg b/core/img/actions/caret-dark.svg
new file mode 100644
index 00000000000..abb1dc192d2
--- /dev/null
+++ b/core/img/actions/caret-dark.svg
@@ -0,0 +1,102 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.0"
+   width="10"
+   height="10"
+   id="svg2403"
+   inkscape:version="0.48.3.1 r9886"
+   sodipodi:docname="caret.svg"
+   inkscape:export-filename="caret.png"
+   inkscape:export-xdpi="90"
+   inkscape:export-ydpi="90">
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1280"
+     inkscape:window-height="773"
+     id="namedview3047"
+     showgrid="false"
+     inkscape:zoom="25.279067"
+     inkscape:cx="-3.063006"
+     inkscape:cy="6.0978375"
+     inkscape:window-x="0"
+     inkscape:window-y="-1"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg2403"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0" />
+  <metadata
+     id="metadata15">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs2405">
+    <linearGradient
+       x1="11.644068"
+       y1="2.4988678"
+       x2="11.644068"
+       y2="15.00281"
+       id="linearGradient2392"
+       xlink:href="#linearGradient3678"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="translate(1.0000001,1.1920928e-8)" />
+    <linearGradient
+       x1="8.4964771"
+       y1="-0.061573759"
+       x2="8.4964771"
+       y2="8.083209"
+       id="linearGradient2395"
+       xlink:href="#linearGradient3678"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="matrix(1.0526316,0,0,0.9843625,0.5789474,0.06024281)" />
+    <linearGradient
+       id="linearGradient3678">
+      <stop
+         id="stop3680"
+         style="stop-color:#ffffff;stop-opacity:1"
+         offset="0" />
+      <stop
+         id="stop3682"
+         style="stop-color:#e6e6e6;stop-opacity:1"
+         offset="1" />
+    </linearGradient>
+  </defs>
+  <path
+     sodipodi:nodetypes="cccc"
+     inkscape:connector-curvature="0"
+     id="path3768"
+     d="M 1,2 5,10 9,2.011 z"
+     style="font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-indent:0;text-align:start;text-decoration:none;line-height:normal;letter-spacing:normal;word-spacing:normal;text-transform:none;direction:ltr;block-progression:tb;writing-mode:lr-tb;text-anchor:start;baseline-shift:baseline;color:#000000;fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:2;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate;font-family:Sans;-inkscape-font-specification:Sans" />
+  <path
+     style="font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-indent:0;text-align:start;text-decoration:none;line-height:normal;letter-spacing:normal;word-spacing:normal;text-transform:none;direction:ltr;block-progression:tb;writing-mode:lr-tb;text-anchor:start;baseline-shift:baseline;color:#000000;fill:#999999;fill-opacity:1;stroke:none;stroke-width:2;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate;font-family:Sans;-inkscape-font-specification:Sans"
+     d="M 1,1 5,9 9,1.011 z"
+     id="path3716"
+     inkscape:connector-curvature="0"
+     sodipodi:nodetypes="cccc" />
+</svg>
diff --git a/core/templates/installation.php b/core/templates/installation.php
index b3b7cfc4b8b..9cb1d4600d5 100644
--- a/core/templates/installation.php
+++ b/core/templates/installation.php
@@ -49,7 +49,7 @@
 	</fieldset>
 
 	<fieldset id="datadirField">
-		<legend><a id="showAdvanced"><?php echo $l->t( 'Advanced' ); ?> <img class="svg" src="<?php echo image_path('', 'actions/triangle-s.svg'); ?>" /></a></legend>
+		<legend><a id="showAdvanced"><?php echo $l->t( 'Advanced' ); ?> <img class="svg" src="<?php echo image_path('', 'actions/caret-dark.svg'); ?>" /></a></legend>
 		<div id="datadirContent">
 			<label for="directory"><?php echo $l->t( 'Data folder' ); ?></label>
 			<input type="text" name="directory" id="directory" value="<?php print OC_Helper::init_var('directory', $_['directory']); ?>" />