diff --git a/toonz/sources/toonz/icons/dark/tools/20/assistant.svg b/toonz/sources/toonz/icons/dark/tools/20/assistant.svg
index 692eda7a..9b3b4e39 100644
--- a/toonz/sources/toonz/icons/dark/tools/20/assistant.svg
+++ b/toonz/sources/toonz/icons/dark/tools/20/assistant.svg
@@ -1,13 +1,6 @@
-<?xml version="1.0" encoding="utf-8"?>
-<svg version="1.1" id="Layer_1_copy_2" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px"
-	 y="0px" viewBox="0 0 26 26" style="enable-background:new 0 0 26 26;" xml:space="preserve">
-<style type="text/css">
-	.st0{fill:url(#icon_1_);stroke:#000000;stroke-linejoin:round;}
-</style>
-<linearGradient id="icon_1_" gradientUnits="userSpaceOnUse" x1="13.5" y1="23.5" x2="13.5" y2="3.5" gradientTransform="matrix(1 0 0 -1 0 26)">
-	<stop  offset="0" style="stop-color:#FCFCFC"/>
-	<stop  offset="1" style="stop-color:#CACACA"/>
-</linearGradient>
-<path id="icon" class="st0" d="M4.5,2.5h-1v20h3v-1h1v1h3v-1h1v1h3v-1h1v1h3v-1h0.8l1,1h3.2v-1L4.5,2.5z M6.5,8.7l9.8,9.8H6.5V8.7z"
-	/>
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="100%" height="100%" viewBox="0 0 20 20" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;">
+    <rect x="0" y="0" width="20" height="20" style="fill-opacity:0;"/>
+    <path d="M12,2l6,0l-16,16l0,-6l1,0c0.276,-0 0.5,-0.224 0.5,-0.5c-0,-0.276 -0.224,-0.5 -0.5,-0.5c-0.436,0 -1,0 -1,0l0,-2l1,0c0.276,-0 0.5,-0.224 0.5,-0.5c-0,-0.276 -0.224,-0.5 -0.5,-0.5c-0.436,0 -1,0 -1,0l0,-2l1,0c0.276,-0 0.5,-0.224 0.5,-0.5c-0,-0.276 -0.224,-0.5 -0.5,-0.5c-0.436,0 -1,0 -1,0l0,-2.5c-0,-0.133 0.053,-0.26 0.146,-0.354c0.094,-0.093 0.221,-0.146 0.354,-0.146l2.5,0l0,1c0,0.276 0.224,0.5 0.5,0.5c0.276,-0 0.5,-0.224 0.5,-0.5c0,-0.436 0,-1 0,-1l2,0l0,1c0,0.276 0.224,0.5 0.5,0.5c0.276,-0 0.5,-0.224 0.5,-0.5c0,-0.436 0,-1 0,-1l2,0l0,1c0,0.276 0.224,0.5 0.5,0.5c0.276,-0 0.5,-0.224 0.5,-0.5c0,-0.436 0,-1 0,-1Zm-1,3l-6,0l0,6l6,-6Z"/>
 </svg>