diff --git a/macosx/build.sh b/macosx/build.sh
index 982a6c8..19af048 100755
--- a/macosx/build.sh
+++ b/macosx/build.sh
@@ -10,6 +10,8 @@ PREFIX_x86_64=`pwd`/prefix_x86_64
 #PREFIX_ppc=`pwd`/prefix_ppc
 #PREFIX_ppc64=`pwd`/prefix_ppc64
 
+export MACOSX_DEPLOYMENT_TARGET=10.6
+
 mkdir -p "$PREFIX"
 mkdir -p "$PREFIX_i386"
 mkdir -p "$PREFIX_x86_64"