diff --git a/dom/base/nsDOMWindowUtils.cpp b/dom/base/nsDOMWindowUtils.cpp
index 84b28760d34a..9aa64a2a9405 100644
--- a/dom/base/nsDOMWindowUtils.cpp
+++ b/dom/base/nsDOMWindowUtils.cpp
@@ -2062,7 +2062,7 @@ nsDOMWindowUtils::SendContentCommandEvent(const nsAString& aType,
   else if (aType.EqualsLiteral("paste"))
     msg = eContentCommandPaste;
   else if (aType.EqualsLiteral("delete"))
-    msg = NS_CONTENT_COMMAND_DELETE;
+    msg = eContentCommandDelete;
   else if (aType.EqualsLiteral("undo"))
     msg = NS_CONTENT_COMMAND_UNDO;
   else if (aType.EqualsLiteral("redo"))
diff --git a/dom/events/EventStateManager.cpp b/dom/events/EventStateManager.cpp
index 8bee7d47a3fc..33ad3f69d090 100644
--- a/dom/events/EventStateManager.cpp
+++ b/dom/events/EventStateManager.cpp
@@ -750,7 +750,7 @@ EventStateManager::PreHandleEvent(nsPresContext* aPresContext,
   case eContentCommandCut:
   case eContentCommandCopy:
   case eContentCommandPaste:
-  case NS_CONTENT_COMMAND_DELETE:
+  case eContentCommandDelete:
   case NS_CONTENT_COMMAND_UNDO:
   case NS_CONTENT_COMMAND_REDO:
   case eContentCommandPasteTransferable:
@@ -5046,7 +5046,7 @@ EventStateManager::DoContentCommandEvent(WidgetContentCommandEvent* aEvent)
     case eContentCommandPaste:
       cmd = "cmd_paste";
       break;
-    case NS_CONTENT_COMMAND_DELETE:
+    case eContentCommandDelete:
       cmd = "cmd_delete";
       break;
     case NS_CONTENT_COMMAND_UNDO:
diff --git a/widget/EventMessageList.h b/widget/EventMessageList.h
index 72a71d11a105..2c50c8e097a2 100644
--- a/widget/EventMessageList.h
+++ b/widget/EventMessageList.h
@@ -303,7 +303,7 @@ NS_EVENT_MESSAGE(eContentCommandEventFirst,        3800)
 NS_EVENT_MESSAGE(eContentCommandCut,               eContentCommandEventFirst)
 NS_EVENT_MESSAGE(eContentCommandCopy,              eContentCommandEventFirst + 1)
 NS_EVENT_MESSAGE(eContentCommandPaste,             eContentCommandEventFirst + 2)
-NS_EVENT_MESSAGE(NS_CONTENT_COMMAND_DELETE,        eContentCommandEventFirst + 3)
+NS_EVENT_MESSAGE(eContentCommandDelete,            eContentCommandEventFirst + 3)
 NS_EVENT_MESSAGE(NS_CONTENT_COMMAND_UNDO,          eContentCommandEventFirst + 4)
 NS_EVENT_MESSAGE(NS_CONTENT_COMMAND_REDO,          eContentCommandEventFirst + 5)
 NS_EVENT_MESSAGE(eContentCommandPasteTransferable, eContentCommandEventFirst + 6)
diff --git a/widget/cocoa/TextInputHandler.mm b/widget/cocoa/TextInputHandler.mm
index c05029c31df5..68a9b2e997d1 100644
--- a/widget/cocoa/TextInputHandler.mm
+++ b/widget/cocoa/TextInputHandler.mm
@@ -2099,8 +2099,7 @@ TextInputHandler::InsertText(NSAttributedString* aAttrString,
     }
     // Delete the selected range.
     nsRefPtr<TextInputHandler> kungFuDeathGrip(this);
-    WidgetContentCommandEvent deleteCommandEvent(true,
-                                                 NS_CONTENT_COMMAND_DELETE,
+    WidgetContentCommandEvent deleteCommandEvent(true, eContentCommandDelete,
                                                  mWidget);
     DispatchEvent(deleteCommandEvent);
     NS_ENSURE_TRUE_VOID(deleteCommandEvent.mSucceeded);
diff --git a/widget/gtk/IMContextWrapper.cpp b/widget/gtk/IMContextWrapper.cpp
index e4945538c687..23f6606f0cab 100644
--- a/widget/gtk/IMContextWrapper.cpp
+++ b/widget/gtk/IMContextWrapper.cpp
@@ -2080,8 +2080,7 @@ IMContextWrapper::DeleteText(GtkIMContext* aContext,
     }
 
     // Delete the selection
-    WidgetContentCommandEvent contentCommandEvent(true,
-                                                  NS_CONTENT_COMMAND_DELETE,
+    WidgetContentCommandEvent contentCommandEvent(true, eContentCommandDelete,
                                                   mLastFocusedWindow);
     mLastFocusedWindow->DispatchEvent(&contentCommandEvent, status);
 
diff --git a/widget/windows/nsWindow.cpp b/widget/windows/nsWindow.cpp
index cd0588c409ab..3d8eabe4bc57 100644
--- a/widget/windows/nsWindow.cpp
+++ b/widget/windows/nsWindow.cpp
@@ -5648,7 +5648,7 @@ nsWindow::ProcessMessage(UINT msg, WPARAM& wParam, LPARAM& lParam,
 
     case WM_CLEAR:
     {
-      WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_DELETE, this);
+      WidgetContentCommandEvent command(true, eContentCommandDelete, this);
       DispatchWindowEvent(&command);
       result = true;
     }