diff --git a/mozilla/string/macbuild/string.mcp b/mozilla/string/macbuild/string.mcp
index 74a50134c2a..47734466ebc 100644
Binary files a/mozilla/string/macbuild/string.mcp and b/mozilla/string/macbuild/string.mcp differ
diff --git a/mozilla/string/public/MANIFEST b/mozilla/string/public/MANIFEST
index 5cbd1883403..f7315ee8d62 100644
--- a/mozilla/string/public/MANIFEST
+++ b/mozilla/string/public/MANIFEST
@@ -37,7 +37,6 @@ nsDependentSubstring.h
 nsFragmentedString.h
 nsLiteralString.h
 nsPrintfCString.h
-nsPrivateSharableString.h
 nsPromiseFlatString.h
 nsReadableUtils.h
 nsSharableString.h
diff --git a/mozilla/xpcom/string/macbuild/string.mcp b/mozilla/xpcom/string/macbuild/string.mcp
index 74a50134c2a..47734466ebc 100644
Binary files a/mozilla/xpcom/string/macbuild/string.mcp and b/mozilla/xpcom/string/macbuild/string.mcp differ
diff --git a/mozilla/xpcom/string/public/MANIFEST b/mozilla/xpcom/string/public/MANIFEST
index 5cbd1883403..f7315ee8d62 100644
--- a/mozilla/xpcom/string/public/MANIFEST
+++ b/mozilla/xpcom/string/public/MANIFEST
@@ -37,7 +37,6 @@ nsDependentSubstring.h
 nsFragmentedString.h
 nsLiteralString.h
 nsPrintfCString.h
-nsPrivateSharableString.h
 nsPromiseFlatString.h
 nsReadableUtils.h
 nsSharableString.h