diff --git a/modules/libpref/macbuild/libpref.xml b/modules/libpref/macbuild/libpref.xml
index f4bb0739fc04..a83c873806bf 100644
--- a/modules/libpref/macbuild/libpref.xml
+++ b/modules/libpref/macbuild/libpref.xml
@@ -994,20 +994,6 @@
                     <FILEKIND>Text</FILEKIND>
                     <FILEFLAGS>Debug</FILEFLAGS>
                 </FILE>
-                <FILE>
-                    <PATHTYPE>Name</PATHTYPE>
-                    <PATH>nsSafeSaveFile.cpp</PATH>
-                    <PATHFORMAT>MacOS</PATHFORMAT>
-                    <FILEKIND>Text</FILEKIND>
-                    <FILEFLAGS>Debug</FILEFLAGS>
-                </FILE>
-                <FILE>
-                    <PATHTYPE>Name</PATHTYPE>
-                    <PATH>nsSafeSaveFile.cpp</PATH>
-                    <PATHFORMAT>MacOS</PATHFORMAT>
-                    <FILEKIND>Text</FILEKIND>
-                    <FILEFLAGS>Debug</FILEFLAGS>
-                </FILE>
             </FILELIST>
             <LINKORDER>
                 <FILEREF>
@@ -1070,16 +1056,6 @@
                     <PATH>prefapi.cpp</PATH>
                     <PATHFORMAT>MacOS</PATHFORMAT>
                 </FILEREF>
-                <FILEREF>
-                    <PATHTYPE>Name</PATHTYPE>
-                    <PATH>nsSafeSaveFile.cpp</PATH>
-                    <PATHFORMAT>MacOS</PATHFORMAT>
-                </FILEREF>
-                <FILEREF>
-                    <PATHTYPE>Name</PATHTYPE>
-                    <PATH>nsSafeSaveFile.cpp</PATH>
-                    <PATHFORMAT>MacOS</PATHFORMAT>
-                </FILEREF>
             </LINKORDER>
         </TARGET>
         <TARGET>
@@ -2023,20 +1999,6 @@
                     <FILEKIND>Text</FILEKIND>
                     <FILEFLAGS></FILEFLAGS>
                 </FILE>
-                <FILE>
-                    <PATHTYPE>Name</PATHTYPE>
-                    <PATH>nsSafeSaveFile.cpp</PATH>
-                    <PATHFORMAT>MacOS</PATHFORMAT>
-                    <FILEKIND>Text</FILEKIND>
-                    <FILEFLAGS>Debug</FILEFLAGS>
-                </FILE>
-                <FILE>
-                    <PATHTYPE>Name</PATHTYPE>
-                    <PATH>nsSafeSaveFile.cpp</PATH>
-                    <PATHFORMAT>MacOS</PATHFORMAT>
-                    <FILEKIND>Text</FILEKIND>
-                    <FILEFLAGS>Debug</FILEFLAGS>
-                </FILE>
             </FILELIST>
             <LINKORDER>
                 <FILEREF>
@@ -2099,16 +2061,6 @@
                     <PATH>prefapi.cpp</PATH>
                     <PATHFORMAT>MacOS</PATHFORMAT>
                 </FILEREF>
-                <FILEREF>
-                    <PATHTYPE>Name</PATHTYPE>
-                    <PATH>nsSafeSaveFile.cpp</PATH>
-                    <PATHFORMAT>MacOS</PATHFORMAT>
-                </FILEREF>
-                <FILEREF>
-                    <PATHTYPE>Name</PATHTYPE>
-                    <PATH>nsSafeSaveFile.cpp</PATH>
-                    <PATHFORMAT>MacOS</PATHFORMAT>
-                </FILEREF>
             </LINKORDER>
         </TARGET>
     </TARGETLIST>
@@ -2144,18 +2096,6 @@
                 <PATH>nsPrefsFactory.cpp</PATH>
                 <PATHFORMAT>MacOS</PATHFORMAT>
             </FILEREF>
-            <FILEREF>
-                <TARGETNAME>libprefDebug.shlb</TARGETNAME>
-                <PATHTYPE>Name</PATHTYPE>
-                <PATH>nsSafeSaveFile.cpp</PATH>
-                <PATHFORMAT>MacOS</PATHFORMAT>
-            </FILEREF>
-            <FILEREF>
-                <TARGETNAME>libprefDebug.shlb</TARGETNAME>
-                <PATHTYPE>Name</PATHTYPE>
-                <PATH>nsSafeSaveFile.cpp</PATH>
-                <PATHFORMAT>MacOS</PATHFORMAT>
-            </FILEREF>
             <FILEREF>
                 <TARGETNAME>libprefDebug.shlb</TARGETNAME>
                 <PATHTYPE>Name</PATHTYPE>