diff --git a/Ports/.port_include.sh b/Ports/.port_include.sh
index f5d5e7633d3..cebea496521 100755
--- a/Ports/.port_include.sh
+++ b/Ports/.port_include.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -eu
 
-SCRIPT="$(realpath $(dirname "${0}"))"
+SCRIPT="$(realpath $(dirname "${BASH_SOURCE[0]}"))"
 
 if [ -z "${SERENITY_STRIPPED_ENV:-}" ]; then
     exec "${SCRIPT}/.strip_env.sh" "${@}"