diff --git a/OpenUtau/Strings/Strings.axaml b/OpenUtau/Strings/Strings.axaml
index afa89e2ee..355f838b8 100644
--- a/OpenUtau/Strings/Strings.axaml
+++ b/OpenUtau/Strings/Strings.axaml
@@ -332,6 +332,13 @@ Warning: this option removes custom presets.</system:String>
     Right click to reset
     Hold Ctrl to select
     Hold Alt to smoothen</system:String>
+  <system:String x:Key="pianoroll.tool.drawlinepitch">
+    Draw Pitch Tool (draw straight line)
+    Left click to draw
+    Right click to reset
+    Hold Ctrl to select
+    Hold Alt to smoothen
+  </system:String>
   <system:String x:Key="pianoroll.tool.eraser">Eraser Tool (3)</system:String>
   <system:String x:Key="pianoroll.tool.knife">Knife Tool (5)</system:String>
   <system:String x:Key="pianoroll.tool.overwritepitch">Overwrite Pitch Tool (Ctrl + 4)
diff --git a/OpenUtau/Strings/Strings.ja-JP.axaml b/OpenUtau/Strings/Strings.ja-JP.axaml
index dcfec1fc3..b9eca4a18 100644
--- a/OpenUtau/Strings/Strings.ja-JP.axaml
+++ b/OpenUtau/Strings/Strings.ja-JP.axaml
@@ -328,6 +328,12 @@
     右クリックでリセット
     Ctrl長押しで選択
     Alt長押しで線をなめらかにする</system:String>
+  <system:String x:Key="pianoroll.tool.drawlinepitch">ピッチ描画ツール (4)
+    左クリックで描画（直線を描きます）
+    右クリックでリセット
+    Ctrl長押しで選択
+    Alt長押しで線をなめらかにする
+  </system:String>
   <system:String x:Key="pianoroll.tool.eraser">消しゴムツール (3)</system:String>
   <system:String x:Key="pianoroll.tool.knife">ナイフツール (5)</system:String>
   <system:String x:Key="pianoroll.tool.overwritepitch">ピッチ上書きツール (Ctrl + 4)
diff --git a/OpenUtau/Views/PianoRollWindow.axaml b/OpenUtau/Views/PianoRollWindow.axaml
index d7c2a7854..d2d88178d 100644
--- a/OpenUtau/Views/PianoRollWindow.axaml
+++ b/OpenUtau/Views/PianoRollWindow.axaml
@@ -424,7 +424,7 @@
             <ToggleButton Classes="toolbar" Margin="0" Padding="1" Height="20" Width="20"
                           IsChecked="{Binding NotesViewModel.DrawLinePitchTool, Mode=OneWay}"
                           Command="{Binding NotesViewModel.SelectToolCommand}" CommandParameter="4++"
-                          ToolTip.Tip="{DynamicResource pianoroll.tool.drawpitch}">
+                          ToolTip.Tip="{DynamicResource pianoroll.tool.drawlinepitch}">
               <Grid Width="18" Height="18">
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