diff --git a/Fuzi.xcodeproj/project.pbxproj b/Fuzi.xcodeproj/project.pbxproj
index 2f7deb8..2b14a0e 100644
--- a/Fuzi.xcodeproj/project.pbxproj
+++ b/Fuzi.xcodeproj/project.pbxproj
@@ -355,6 +355,7 @@
 				PRODUCT_NAME = "$(PROJECT_NAME)";
 				SUPPORTED_PLATFORMS = "macosx iphoneos appletvos watchos iphonesimulator appletvsimulator watchsimulator";
 				SWIFT_INCLUDE_PATHS = "$(inherited) $(SRCROOT)/libxml2";
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
@@ -414,6 +415,7 @@
 				PRODUCT_NAME = "$(PROJECT_NAME)";
 				SUPPORTED_PLATFORMS = "macosx iphoneos appletvos watchos iphonesimulator appletvsimulator watchsimulator";
 				SWIFT_INCLUDE_PATHS = "$(inherited) $(SRCROOT)/libxml2";
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
diff --git a/FuziDemo/FuziDemo.xcodeproj/project.pbxproj b/FuziDemo/FuziDemo.xcodeproj/project.pbxproj
index 7daea5b..235d6a1 100644
--- a/FuziDemo/FuziDemo.xcodeproj/project.pbxproj
+++ b/FuziDemo/FuziDemo.xcodeproj/project.pbxproj
@@ -249,7 +249,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = me.cezheng.FuzeDemo;
 				PRODUCT_NAME = FuziDemo;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_SWIFT3_OBJC_INFERENCE = On;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
 				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
@@ -270,7 +270,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = me.cezheng.FuzeDemo;
 				PRODUCT_NAME = FuziDemo;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_SWIFT3_OBJC_INFERENCE = On;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
 				SWIFT_VERSION = 4.0;
 			};
 			name = Release;