diff --git a/buildscripts/_build_getopts.sh b/buildscripts/_build_getopts.sh
index acd3863e8..60c364223 100755
--- a/buildscripts/_build_getopts.sh
+++ b/buildscripts/_build_getopts.sh
@@ -24,7 +24,7 @@ while getopts ":d:p:m:h" ARG; do
         DEPENDENCY_DIR=$(realpath ${OPTARG})
         ;;
     p)
-        PREFIX="${OPTARG}"
+        PREFIX=$(realpath ${OPTARG})
         ;;
     m)
         MACOSX_DEPLOYMENT_TARGET="${OPTARG}"