diff --git a/Tusker.xcodeproj/project.pbxproj b/Tusker.xcodeproj/project.pbxproj
index 7b653611..487bf316 100644
--- a/Tusker.xcodeproj/project.pbxproj
+++ b/Tusker.xcodeproj/project.pbxproj
@@ -2573,6 +2573,10 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SUPPORTS_MACCATALYST = YES;
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
+				"SWIFT_ACTIVE_COMPILATION_CONDITIONS[sdk=iphoneos15.0]" = "SDK_IOS_15 $(inherited)";
+				"SWIFT_ACTIVE_COMPILATION_CONDITIONS[sdk=iphonesimulator15.0]" = "SDK_IOS_15 $(inherited)";
+				"SWIFT_ACTIVE_COMPILATION_CONDITIONS[sdk=macosx12.0]" = "SDK_IOS_15 $(inherited)";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2,6";
 			};