diff --git a/src/platform/DARWIN/AFSPreference/OpenAFS.xcodeproj/project.pbxproj b/src/platform/DARWIN/AFSPreference/OpenAFS.xcodeproj/project.pbxproj
index c18a959adc..01837198c3 100644
--- a/src/platform/DARWIN/AFSPreference/OpenAFS.xcodeproj/project.pbxproj
+++ b/src/platform/DARWIN/AFSPreference/OpenAFS.xcodeproj/project.pbxproj
@@ -877,6 +877,7 @@
 				"ARCHS[sdk=macosx10.5]" = "$(ARCHS_STANDARD_32_BIT)";
 				"ARCHS[sdk=macosx10.6]" = "$(ARCHS_STANDARD_32_64_BIT)";
 				"ARCHS[sdk=macosx10.7]" = "$(ARCHS_STANDARD_32_64_BIT)";
+				"ARCHS[sdk=macosx10.8]" = "$(ARCHS_STANDARD_32_64_BIT)";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
 				GCC_ENABLE_OBJC_GC = supported;
@@ -897,6 +898,7 @@
 				"ARCHS[sdk=macosx10.5]" = "$(ARCHS_STANDARD_32_BIT)";
 				"ARCHS[sdk=macosx10.6]" = "$(ARCHS_STANDARD_32_64_BIT)";
 				"ARCHS[sdk=macosx10.7]" = "$(ARCHS_STANDARD_32_64_BIT)";
+				"ARCHS[sdk=macosx10.8]" = "$(ARCHS_STANDARD_32_64_BIT)";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
 				GCC_ENABLE_OBJC_GC = supported;
diff --git a/src/platform/DARWIN/afscell/afscell.xcodeproj/project.pbxproj b/src/platform/DARWIN/afscell/afscell.xcodeproj/project.pbxproj
index 4e572c8014..c6af32716c 100644
--- a/src/platform/DARWIN/afscell/afscell.xcodeproj/project.pbxproj
+++ b/src/platform/DARWIN/afscell/afscell.xcodeproj/project.pbxproj
@@ -213,6 +213,8 @@
 		B44174E708BA33C40065BEDE /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
+				ONLY_ACTIVE_ARCH = NO;
 				COPY_PHASE_STRIP = NO;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_ENABLE_FIX_AND_CONTINUE = YES;
@@ -234,7 +236,10 @@
 				ARCHS = (
 					ppc,
 					i386,
+					x86_64,
 				);
+				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
+				ONLY_ACTIVE_ARCH = NO;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
 				GCC_MODEL_TUNING = G5;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;