diff --git a/DTFoundation.xcodeproj/project.pbxproj b/DTFoundation.xcodeproj/project.pbxproj
index d44deee0..d22e93ba 100644
--- a/DTFoundation.xcodeproj/project.pbxproj
+++ b/DTFoundation.xcodeproj/project.pbxproj
@@ -2910,6 +2910,7 @@
 		A70ED6C317F98468008A801A /* Coverage */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_WARN_EMPTY_BODY = YES;
@@ -3554,6 +3555,7 @@
 		A7E889B216A9B190009EF0DF /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_WARN_EMPTY_BODY = YES;
@@ -3575,6 +3577,7 @@
 		A7E889B316A9B190009EF0DF /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_WARN_EMPTY_BODY = YES;