diff --git a/toonz/sources/toonz/Resources/tool_assistant.svg b/toonz/sources/toonz/Resources/tool_assistant.svg
deleted file mode 100644
index 692eda7..0000000
--- a/toonz/sources/toonz/Resources/tool_assistant.svg
+++ /dev/null
@@ -1,13 +0,0 @@
-<?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"
-	/>
-</svg>
diff --git a/toonz/sources/toonz/Resources/tool_assistant_rollover.svg b/toonz/sources/toonz/Resources/tool_assistant_rollover.svg
deleted file mode 100644
index ef3622f..0000000
--- a/toonz/sources/toonz/Resources/tool_assistant_rollover.svg
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<svg version="1.1" id="Layer_1_copy_3" 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:#FFFFE8"/>
-	<stop  offset="1" style="stop-color:#EDCA6A"/>
-</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"
-	/>
-</svg>
diff --git a/toonz/sources/toonz/icons/dark/tools/20/assistant.svg b/toonz/sources/toonz/icons/dark/tools/20/assistant.svg
new file mode 100644
index 0000000..692eda7
--- /dev/null
+++ b/toonz/sources/toonz/icons/dark/tools/20/assistant.svg
@@ -0,0 +1,13 @@
+<?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"
+	/>
+</svg>
diff --git a/toonz/sources/toonz/mainwindow.cpp b/toonz/sources/toonz/mainwindow.cpp
index 8249ec1..342c043 100644
--- a/toonz/sources/toonz/mainwindow.cpp
+++ b/toonz/sources/toonz/mainwindow.cpp
@@ -2472,7 +2472,7 @@ void MainWindow::defineActions() {
   createToolAction(T_Plastic, "plastic", QT_TR_NOOP("Plastic Tool"), "X");
   createToolAction(T_Ruler, "ruler", QT_TR_NOOP("Ruler Tool"), "");
   createToolAction(T_Finger, "finger", QT_TR_NOOP("Finger Tool"), "");
-  createToolAction(T_EditAssistants, "tool_assistant", QT_TR_NOOP("Edit Assistants"), "");
+  createToolAction(T_EditAssistants, "assistant", QT_TR_NOOP("Edit Assistants"), "");
 
   /*-- Animate tool + mode switching shortcuts --*/
   createAction(MI_EditNextMode, QT_TR_NOOP("Animate Tool - Next Mode"), "",
diff --git a/toonz/sources/toonz/toonz.qrc b/toonz/sources/toonz/toonz.qrc
index 708740e..dad7582 100644
--- a/toonz/sources/toonz/toonz.qrc
+++ b/toonz/sources/toonz/toonz.qrc
@@ -35,6 +35,7 @@
 		<file>icons/dark/tools/20/hand.svg</file>
 		<file>icons/dark/tools/20/rotate.svg</file>
 		<file>icons/dark/tools/20/zoom.svg</file>
+		<file>icons/dark/tools/20/assistant.svg</file>
 
 		<file>icons/dark/tools/18/edit_center.svg</file>
 		<file>icons/dark/tools/18/edit_all.svg</file>