diff --git a/java/src/com/android/inputmethod/keyboard/MainKeyboardView.java b/java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
index 6c56b8aab..3590c486b 100644
--- a/java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
+++ b/java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
@@ -700,12 +700,12 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
     }
 
     @Override
-    public void onCancelMoreKeysPanel(final MoreKeysPanel panel) {
+    public void onCancelMoreKeysPanel() {
         PointerTracker.dismissAllMoreKeysPanels();
     }
 
     @Override
-    public void onDismissMoreKeysPanel(final MoreKeysPanel panel) {
+    public void onDismissMoreKeysPanel() {
         dimEntireKeyboard(false /* dimmed */);
         if (isShowingMoreKeysPanel()) {
             mMoreKeysPanel.removeFromParent();
diff --git a/java/src/com/android/inputmethod/keyboard/MoreKeysKeyboardView.java b/java/src/com/android/inputmethod/keyboard/MoreKeysKeyboardView.java
index 1891dfc74..fc331970b 100644
--- a/java/src/com/android/inputmethod/keyboard/MoreKeysKeyboardView.java
+++ b/java/src/com/android/inputmethod/keyboard/MoreKeysKeyboardView.java
@@ -122,7 +122,7 @@ public class MoreKeysKeyboardView extends KeyboardView implements MoreKeysPanel
         onMoveKeyInternal(x, y, pointerId);
         if (hasOldKey && mCurrentKey == null) {
             // If the pointer has moved too far away from any target then cancel the panel.
-            mController.onCancelMoreKeysPanel(this);
+            mController.onCancelMoreKeysPanel();
         }
     }
 
@@ -184,7 +184,7 @@ public class MoreKeysKeyboardView extends KeyboardView implements MoreKeysPanel
         if (!isShowingInParent()) {
             return;
         }
-        mController.onDismissMoreKeysPanel(this);
+        mController.onDismissMoreKeysPanel();
     }
 
     @Override
diff --git a/java/src/com/android/inputmethod/keyboard/MoreKeysPanel.java b/java/src/com/android/inputmethod/keyboard/MoreKeysPanel.java
index b3422d177..7bddd09f6 100644
--- a/java/src/com/android/inputmethod/keyboard/MoreKeysPanel.java
+++ b/java/src/com/android/inputmethod/keyboard/MoreKeysPanel.java
@@ -29,26 +29,22 @@ public interface MoreKeysPanel {
 
         /**
          * Remove the current {@link MoreKeysPanel} from the target view.
-         * @param panel the panel to be dismissed.
          */
-        // TODO: Remove unused {@link MoreKeysPanel} argument.
-        public void onDismissMoreKeysPanel(final MoreKeysPanel panel);
+        public void onDismissMoreKeysPanel();
 
         /**
          * Instructs the parent to cancel the panel (e.g., when entering a different input mode).
-         * @param panel the panel to be canceled.
          */
-        // TODO: Remove unused {@link MoreKeysPanel} argument.
-        public void onCancelMoreKeysPanel(final MoreKeysPanel panel);
+        public void onCancelMoreKeysPanel();
     }
 
     public static final Controller EMPTY_CONTROLLER = new Controller() {
         @Override
         public void onShowMoreKeysPanel(final MoreKeysPanel panel) {}
         @Override
-        public void onDismissMoreKeysPanel(final MoreKeysPanel panel) {}
+        public void onDismissMoreKeysPanel() {}
         @Override
-        public void onCancelMoreKeysPanel(final MoreKeysPanel panel) {}
+        public void onCancelMoreKeysPanel() {}
     };
 
     /**
diff --git a/java/src/com/android/inputmethod/latin/suggestions/SuggestionStripView.java b/java/src/com/android/inputmethod/latin/suggestions/SuggestionStripView.java
index 5c9973d6e..43cb11b14 100644
--- a/java/src/com/android/inputmethod/latin/suggestions/SuggestionStripView.java
+++ b/java/src/com/android/inputmethod/latin/suggestions/SuggestionStripView.java
@@ -280,8 +280,8 @@ public final class SuggestionStripView extends RelativeLayout implements OnClick
     private final MoreKeysPanel.Controller mMoreSuggestionsController =
             new MoreKeysPanel.Controller() {
         @Override
-        public void onDismissMoreKeysPanel(final MoreKeysPanel panel) {
-            mMainKeyboardView.onDismissMoreKeysPanel(panel);
+        public void onDismissMoreKeysPanel() {
+            mMainKeyboardView.onDismissMoreKeysPanel();
         }
 
         @Override
@@ -290,7 +290,7 @@ public final class SuggestionStripView extends RelativeLayout implements OnClick
         }
 
         @Override
-        public void onCancelMoreKeysPanel(final MoreKeysPanel panel) {
+        public void onCancelMoreKeysPanel() {
             dismissMoreSuggestionsPanel();
         }
     };
@@ -321,8 +321,7 @@ public final class SuggestionStripView extends RelativeLayout implements OnClick
         }
         // Dismiss another {@link MoreKeysPanel} that may be being showed, for example
         // {@link MoreKeysKeyboardView}.
-        // TODO: Remove unused null argument.
-        mMainKeyboardView.onDismissMoreKeysPanel(null /* unused */);
+        mMainKeyboardView.onDismissMoreKeysPanel();
         // Dismiss all key previews and sliding key input preview that may be being showed.
         mMainKeyboardView.dismissAllKeyPreviews();
         mMainKeyboardView.dismissSlidingKeyInputPreview();