diff --git a/app/src/processing/app/syntax/SketchTextAreaDefaultInputMap.java b/app/src/processing/app/syntax/SketchTextAreaDefaultInputMap.java
index 6a6da5d3a..38a69f6d9 100644
--- a/app/src/processing/app/syntax/SketchTextAreaDefaultInputMap.java
+++ b/app/src/processing/app/syntax/SketchTextAreaDefaultInputMap.java
@@ -16,6 +16,7 @@ public class SketchTextAreaDefaultInputMap extends RSyntaxTextAreaDefaultInputMa
   public SketchTextAreaDefaultInputMap() {
     int defaultModifier = getDefaultModifier();
     int alt = InputEvent.ALT_MASK;
+    int shift = InputEvent.SHIFT_MASK;
     boolean isOSX = RTextArea.isOSX();
     int moveByWordMod = isOSX ? alt : defaultModifier;
 
@@ -38,6 +39,9 @@ public class SketchTextAreaDefaultInputMap extends RSyntaxTextAreaDefaultInputMa
       put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, defaultModifier), DefaultEditorKit.beginAction);
       put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, defaultModifier), DefaultEditorKit.endAction);
 
+      put(KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, defaultModifier | shift), DefaultEditorKit.selectLineAction);
+      put(KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, defaultModifier | shift), DefaultEditorKit.selectLineAction);
+
       remove(KeyStroke.getKeyStroke(KeyEvent.VK_J, defaultModifier));
 
       put(KeyStroke.getKeyStroke(KeyEvent.VK_OPEN_BRACKET, defaultModifier), DefaultEditorKit.insertTabAction);