diff --git a/build/osx/wxcocoa.xcodeproj/project.pbxproj b/build/osx/wxcocoa.xcodeproj/project.pbxproj
index 1aa8b02f5e..20a8f1498e 100644
--- a/build/osx/wxcocoa.xcodeproj/project.pbxproj
+++ b/build/osx/wxcocoa.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 45;
+	objectVersion = 46;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -3976,8 +3976,11 @@
 /* Begin PBXProject section */
 		19367367C9323490BB936F06 /* Project object */ = {
 			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 0500;
+			};
 			buildConfigurationList = 6976B5F5F3A63A21A92029E3 /* Build configuration list for PBXProject "wxcocoa" */;
-			compatibilityVersion = "Xcode 3.1";
+			compatibilityVersion = "Xcode 3.2";
 			developmentRegion = English;
 			hasScannedForEncodings = 1;
 			knownRegions = (
@@ -5719,6 +5722,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 8707324525DB344EA0E7D5CE /* wxdebug.xcconfig */;
 			buildSettings = {
+				ONLY_ACTIVE_ARCH = YES;
 				WXROOT = "$(PROJECT_DIR)/../..";
 			};
 			name = Debug;