diff --git a/MacOSX/build-package.in b/MacOSX/build-package.in
index 03f8d156..1a0a8bc2 100755
--- a/MacOSX/build-package.in
+++ b/MacOSX/build-package.in
@@ -13,15 +13,15 @@ OSX_RELEASE=`sw_vers -productVersion`
 case ${OSX_RELEASE:0:4} in
 	"10.8")
 		SYSROOT="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk"
-		export CFLAGS="-isysroot $SYSROOT -arch x86_64 -mmacosx-version-min=10.8"
+		export CFLAGS="-isysroot $SYSROOT -arch i386 -arch x86_64 -mmacosx-version-min=10.8"
 	;;
 	"10.9")
 		SYSROOT="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk"
-		export CFLAGS="-isysroot $SYSROOT -arch x86_64 -mmacosx-version-min=10.9"
+		export CFLAGS="-isysroot $SYSROOT -arch i386 -arch x86_64 -mmacosx-version-min=10.9"
 	;;
 	*)
 		SYSROOT="/Developer/SDKs/MacOSX10.6.sdk"
-		export CFLAGS="-isysroot $SYSROOT -arch x86_64 -mmacosx-version-min=10.6"
+		export CFLAGS="-isysroot $SYSROOT -arch i386 -arch x86_64 -mmacosx-version-min=10.6"
 	;;
 esac