diff --git a/Frameworks/MAD/MAD.xcodeproj/project.pbxproj b/Frameworks/MAD/MAD.xcodeproj/project.pbxproj
index 2f7587e21..02c1c8f7e 100644
--- a/Frameworks/MAD/MAD.xcodeproj/project.pbxproj
+++ b/Frameworks/MAD/MAD.xcodeproj/project.pbxproj
@@ -284,7 +284,9 @@
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
-				GCC_PREPROCESSOR_DEFINITIONS = FPM_DEFAULT;
+				GCC_PREPROCESSOR_DEFINITIONS = "";
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=i386]" = FPM_INTEL;
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=x86_64]" = FPM_64BIT;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "@loader_path/../Frameworks";
 				LIBRARY_STYLE = DYNAMIC;
@@ -310,7 +312,9 @@
 				GCC_MODEL_TUNING = G5;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
-				GCC_PREPROCESSOR_DEFINITIONS = FPM_INTEL;
+				GCC_PREPROCESSOR_DEFINITIONS = "";
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=i386]" = FPM_INTEL;
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=x86_64]" = FPM_64BIT;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "@loader_path/../Frameworks";
 				LIBRARY_STYLE = DYNAMIC;
diff --git a/Plugins/MAD/MAD.xcodeproj/project.pbxproj b/Plugins/MAD/MAD.xcodeproj/project.pbxproj
index 4f897827d..2208866d4 100644
--- a/Plugins/MAD/MAD.xcodeproj/project.pbxproj
+++ b/Plugins/MAD/MAD.xcodeproj/project.pbxproj
@@ -267,7 +267,8 @@
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = MAD_Prefix.pch;
-				GCC_PREPROCESSOR_DEFINITIONS = FPM_DEFAULT;
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=i386]" = FPM_INTEL;
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=x86_64]" = FPM_64BIT;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(HOME)/Library/Bundles";
 				OTHER_CFLAGS = "-Wall";
@@ -294,6 +295,8 @@
 				GCC_MODEL_TUNING = G5;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = MAD_Prefix.pch;
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=i386]" = FPM_INTEL;
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=x86_64]" = FPM_64BIT;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(HOME)/Library/Bundles";
 				OTHER_CFLAGS = "-Wall";