diff --git a/editor/composer/src/moz.build b/editor/composer/src/moz.build
index 96426d6b7028..4dd75d8caf3d 100644
--- a/editor/composer/src/moz.build
+++ b/editor/composer/src/moz.build
@@ -6,7 +6,7 @@
 
 MODULE = 'editor'
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsComposerCommands.cpp',
     'nsComposerCommandsUpdater.cpp',
     'nsComposerController.cpp',
diff --git a/editor/libeditor/base/moz.build b/editor/libeditor/base/moz.build
index 9426c63a4241..eef991303ea5 100644
--- a/editor/libeditor/base/moz.build
+++ b/editor/libeditor/base/moz.build
@@ -8,7 +8,7 @@ TEST_DIRS += ['tests']
 
 MODULE = 'editor'
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'ChangeAttributeTxn.cpp',
     'ChangeCSSInlineStyleTxn.cpp',
     'CreateElementTxn.cpp',
diff --git a/editor/libeditor/html/moz.build b/editor/libeditor/html/moz.build
index b3bf8225b6c1..0c38dfd44e38 100644
--- a/editor/libeditor/html/moz.build
+++ b/editor/libeditor/html/moz.build
@@ -8,7 +8,7 @@ TEST_DIRS += ['tests']
 
 MODULE = 'editor'
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsEditProperty.cpp',
     'nsHTMLAbsPosition.cpp',
     'nsHTMLAnonymousUtils.cpp',
diff --git a/editor/libeditor/text/moz.build b/editor/libeditor/text/moz.build
index ad70d96677a2..c4431e88a8f8 100644
--- a/editor/libeditor/text/moz.build
+++ b/editor/libeditor/text/moz.build
@@ -8,7 +8,7 @@ TEST_DIRS += ['tests']
 
 MODULE = 'editor'
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsInternetCiter.cpp',
     'nsPlaintextDataTransfer.cpp',
     'nsPlaintextEditor.cpp',
diff --git a/editor/txmgr/src/moz.build b/editor/txmgr/src/moz.build
index 5d8070760cca..07ab4bcda5ec 100644
--- a/editor/txmgr/src/moz.build
+++ b/editor/txmgr/src/moz.build
@@ -6,7 +6,7 @@
 
 MODULE = 'txmgr'
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsTransactionItem.cpp',
     'nsTransactionList.cpp',
     'nsTransactionManager.cpp',
diff --git a/editor/txtsvc/src/moz.build b/editor/txtsvc/src/moz.build
index 970dc52c6a8e..2ff7258e951a 100644
--- a/editor/txtsvc/src/moz.build
+++ b/editor/txtsvc/src/moz.build
@@ -6,7 +6,7 @@
 
 MODULE = 'txtsvc'
 
-SOURCES += [
+UNIFIED_SOURCES += [
     'nsFilteredContentIterator.cpp',
     'nsTextServicesDocument.cpp',
 ]