diff --git a/projectfiles/Xcode/The Battle for Wesnoth.xcodeproj/project.pbxproj b/projectfiles/Xcode/The Battle for Wesnoth.xcodeproj/project.pbxproj
index 2fb25f835cc..df68d198970 100644
--- a/projectfiles/Xcode/The Battle for Wesnoth.xcodeproj/project.pbxproj	
+++ b/projectfiles/Xcode/The Battle for Wesnoth.xcodeproj/project.pbxproj	
@@ -6447,6 +6447,7 @@
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = /Applications;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				LLVM_LTO = YES_THIN;
 				OTHER_CPLUSPLUSFLAGS = "$(OTHER_CFLAGS)";
 				OTHER_LDFLAGS = (
 					"-lz",
@@ -6745,6 +6746,7 @@
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = /Applications;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				LLVM_LTO = YES_THIN;
 				OTHER_CPLUSPLUSFLAGS = "$(OTHER_CFLAGS)";
 				OTHER_LDFLAGS = (
 					"-lz",