diff --git a/extras/Introjucer/Builds/MacOSX/The Introjucer.xcodeproj/project.pbxproj b/extras/Introjucer/Builds/MacOSX/The Introjucer.xcodeproj/project.pbxproj
index e92857b6fb..b0610478da 100644
--- a/extras/Introjucer/Builds/MacOSX/The Introjucer.xcodeproj/project.pbxproj	
+++ b/extras/Introjucer/Builds/MacOSX/The Introjucer.xcodeproj/project.pbxproj	
@@ -2014,7 +2014,6 @@
 					0FFEF043CA89142B18C79ABE,
 					92ABB8016546F41128399E9D, ); name = Source; sourceTree = "<group>"; };
 		EA0BCC969703B2D179089E55 = {isa = XCBuildConfiguration; buildSettings = {
-				ARCHS = "$(NATIVE_ARCH_ACTUAL)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_LINK_OBJC_RUNTIME = NO;
 				COMBINE_HIDPI_IMAGES = YES;
@@ -2038,7 +2037,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.roli.introjucer;
 				SDKROOT_ppc = macosx10.5; }; name = Debug; };
 		B159CF4275B8A90122629FF4 = {isa = XCBuildConfiguration; buildSettings = {
-				ARCHS = "$(NATIVE_ARCH_ACTUAL)";
 				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
 				CLANG_LINK_OBJC_RUNTIME = NO;
 				COMBINE_HIDPI_IMAGES = YES;
@@ -2075,6 +2073,7 @@
 				GCC_WARN_NON_VIRTUAL_DESTRUCTOR = YES;
 				GCC_WARN_TYPECHECK_CALLS_TO_PRINTF = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
+				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_NAME = "Introjucer";
 				WARNING_CFLAGS = -Wreorder;
 				ZERO_LINK = NO; }; name = Debug; };
diff --git a/extras/Introjucer/Introjucer.jucer b/extras/Introjucer/Introjucer.jucer
index 054a8a9994..429d5b27bd 100644
--- a/extras/Introjucer/Introjucer.jucer
+++ b/extras/Introjucer/Introjucer.jucer
@@ -18,9 +18,9 @@
                extraCompilerFlags="-Wall -Wshadow -Wno-missing-field-initializers -Wshadow -Wshorten-64-to-32 -Wstrict-aliasing -Wuninitialized -Wunused-parameter -Wconversion -Wsign-compare -Wint-conversion -Woverloaded-virtual -Wreorder -Wconstant-conversion -Wsign-conversion">
       <CONFIGURATIONS>
         <CONFIGURATION name="Debug" isDebug="1" optimisation="1" targetName="Introjucer"
-                       osxSDK="default" osxCompatibility="10.10 SDK" osxArchitecture="Native"/>
+                       osxSDK="default" osxCompatibility="10.10 SDK" osxArchitecture="default"/>
         <CONFIGURATION name="Release" isDebug="0" optimisation="3" targetName="Introjucer"
-                       osxSDK="default" osxCompatibility="10.5 SDK" osxArchitecture="Native"/>
+                       osxSDK="default" osxCompatibility="10.5 SDK" osxArchitecture="default"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_gui_extra" path="../../modules"/>