diff --git a/Projects/MacOS/ProjectBuilder/XercesLib/XercesLib.pbproj/project.pbxproj b/Projects/MacOS/ProjectBuilder/XercesLib/XercesLib.pbproj/project.pbxproj
index 6d88db383070d3ca81a6dc058a9e6b8939b9727f..7374c55b50df33e18ede886044fed8c8a3ae2f59 100644
--- a/Projects/MacOS/ProjectBuilder/XercesLib/XercesLib.pbproj/project.pbxproj
+++ b/Projects/MacOS/ProjectBuilder/XercesLib/XercesLib.pbproj/project.pbxproj
@@ -593,6 +593,8 @@
 				02058DD9FF8AF8CD7F000001,
 				02058DDDFF8AF8CD7F000001,
 				02058DDEFF8AF8CD7F000001,
+				F59560B402EC620201A80066,
+				F59560B502EC620201A80066,
 				02058DE0FF8AF8CD7F000001,
 				02058DE1FF8AF8CD7F000001,
 				02058DE2FF8AF8CD7F000001,
@@ -3139,6 +3141,7 @@
 				F58FFC7E02C4ED6101A80065,
 				F58FFC8102C4ED8601A80065,
 				F58FFC8202C4ED8601A80065,
+				F59560B702EC620201A80066,
 			);
 			isa = PBXHeadersBuildPhase;
 		};
@@ -3377,6 +3380,7 @@
 				F58FFC7702C4ED4301A80065,
 				F58FFC7902C4ED4301A80065,
 				F58FFC7B02C4ED4301A80065,
+				F59560B602EC620201A80066,
 			);
 			isa = PBXSourcesBuildPhase;
 		};
@@ -7318,6 +7322,28 @@
 			settings = {
 			};
 		};
+		F59560B402EC620201A80066 = {
+			isa = PBXFileReference;
+			path = EncodingValidator.cpp;
+			refType = 4;
+		};
+		F59560B502EC620201A80066 = {
+			isa = PBXFileReference;
+			path = EncodingValidator.hpp;
+			refType = 4;
+		};
+		F59560B602EC620201A80066 = {
+			fileRef = F59560B402EC620201A80066;
+			isa = PBXBuildFile;
+			settings = {
+			};
+		};
+		F59560B702EC620201A80066 = {
+			fileRef = F59560B502EC620201A80066;
+			isa = PBXBuildFile;
+			settings = {
+			};
+		};
 		F5A6C8D401B9677901000102 = {
 			isa = PBXFileReference;
 			path = DateDatatypeValidator.cpp;