diff --git a/KissXML.xcodeproj/project.pbxproj b/KissXML.xcodeproj/project.pbxproj
index 29255a5b..f73a7875 100644
--- a/KissXML.xcodeproj/project.pbxproj
+++ b/KissXML.xcodeproj/project.pbxproj
@@ -570,6 +570,7 @@
 		0DCD8DD31E54A3A3001D9832 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				DEFINES_MODULE = YES;
@@ -592,6 +593,7 @@
 		0DCD8DD41E54A3A3001D9832 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				DEFINES_MODULE = YES;
@@ -613,6 +615,7 @@
 		D94131B81E5CEBE700189BD5 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				DEFINES_MODULE = YES;
@@ -636,6 +639,7 @@
 		D94131B91E5CEBE700189BD5 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				DEFINES_MODULE = YES;
@@ -658,6 +662,7 @@
 		D94131D11E5CEC8300189BD5 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				DEFINES_MODULE = YES;
@@ -681,6 +686,7 @@
 		D94131D21E5CEC8300189BD5 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				DEFINES_MODULE = YES;
@@ -703,6 +709,7 @@
 		D94131EA1E5CECC700189BD5 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				DEFINES_MODULE = YES;
@@ -726,6 +733,7 @@
 		D94131EB1E5CECC700189BD5 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_IDENTITY = "";
 				DEFINES_MODULE = YES;