diff --git a/build.sh b/build.sh
index 7432c85..303fe8e 100755
--- a/build.sh
+++ b/build.sh
@@ -39,7 +39,7 @@
 echo "enum dubVersion = \"$GITVER\";" >> source/dub/version_.d
 
 # For OSX compatibility >= 10.6
-export MACOSX_DEPLOYMENT_TARGET=10.6
+MACOSX_DEPLOYMENT_TARGET=10.6
 
 echo Running $DMD...
 $DMD -ofbin/dub -w -version=DubUseCurl -Isource $* $LIBS @build-files.txt