diff --git a/app/src/processing/app/syntax/InputHandler.java b/app/src/processing/app/syntax/InputHandler.java
index debf3023b..5009dc407 100644
--- a/app/src/processing/app/syntax/InputHandler.java
+++ b/app/src/processing/app/syntax/InputHandler.java
@@ -1173,4 +1173,12 @@ public abstract class InputHandler extends KeyAdapter
     }
     return wordEnd;
   }
+
+
+  /**
+   * Called when input method support committed a character.
+   * @param c The input character
+   */
+  public void onCommittedFromInputMethodSupport(char c) {
+  }
 }
diff --git a/app/src/processing/app/syntax/JEditTextArea.java b/app/src/processing/app/syntax/JEditTextArea.java
index 0466a1955..94ce33c81 100644
--- a/app/src/processing/app/syntax/JEditTextArea.java
+++ b/app/src/processing/app/syntax/JEditTextArea.java
@@ -193,6 +193,12 @@ public class JEditTextArea extends JComponent
     if (Preferences.getBoolean("editor.input_method_support")) {
       if (inputMethodSupport == null) {
         inputMethodSupport = new InputMethodSupport(this);
+        inputMethodSupport.setCallback(new InputMethodSupport.Callback() {
+          @Override
+          public void onCommitted(char c) {
+            inputHandler.onCommittedFromInputMethodSupport(c);
+          }
+        });
       }
       return inputMethodSupport;
     }
diff --git a/app/src/processing/app/syntax/im/InputMethodSupport.java b/app/src/processing/app/syntax/im/InputMethodSupport.java
index f092e05c1..b44a686f0 100644
--- a/app/src/processing/app/syntax/im/InputMethodSupport.java
+++ b/app/src/processing/app/syntax/im/InputMethodSupport.java
@@ -40,6 +40,10 @@ import processing.app.syntax.TextAreaPainter;
  */
 public class InputMethodSupport implements InputMethodRequests, InputMethodListener {
 
+  public interface Callback {
+    public void onCommitted(char c);
+  }
+
   static private final Attribute[] CUSTOM_IM_ATTRIBUTES = {
     TextAttribute.INPUT_METHOD_HIGHLIGHT,
   };
@@ -47,6 +51,7 @@ public class InputMethodSupport implements InputMethodRequests, InputMethodListe
   private int committedCount = 0;
   private JEditTextArea textArea;
   private AttributedString composedTextString;
+  private Callback callback;
 
   public InputMethodSupport(JEditTextArea textArea) {
     this.textArea = textArea;
@@ -55,6 +60,11 @@ public class InputMethodSupport implements InputMethodRequests, InputMethodListe
   }
 
 
+  public void setCallback(Callback callback) {
+    this.callback = callback;
+  }
+
+
   /////////////////////////////////////////////////////////////////////////////
 
   // InputMethodRequest
@@ -170,6 +180,8 @@ public class InputMethodSupport implements InputMethodRequests, InputMethodListe
       char c = text.first();
       while (remaining-- > 0) {
         insertCharacter(c);
+        if (callback != null)
+          callback.onCommitted(c);
         c = text.next();
       }
 
diff --git a/java/src/processing/mode/java/JavaInputHandler.java b/java/src/processing/mode/java/JavaInputHandler.java
index 99b7f18c4..b675c063a 100644
--- a/java/src/processing/mode/java/JavaInputHandler.java
+++ b/java/src/processing/mode/java/JavaInputHandler.java
@@ -334,6 +334,13 @@ public class JavaInputHandler extends PdeInputHandler {
   }
 
 
+  @Override
+  public void onCommittedFromInputMethodSupport(char c) {
+    Sketch sketch = editor.getSketch();
+    sketch.setModified(true);
+  }
+
+
   /**
    * Return the index for the first character on this line.
    */