diff --git a/tools/builder_defaults.sh b/tools/builder_defaults.sh
index 86a901fcc5..5cf9918a3d 100644
--- a/tools/builder_defaults.sh
+++ b/tools/builder_defaults.sh
@@ -308,7 +308,7 @@ esac
 # Define base package version, based on date for snaps
 export CORE_PKG_VERSION="${PRODUCT_VERSION%%-*}${CORE_PKG_DATESTRING}"
 export CORE_PKG_PATH=${CORE_PKG_PATH:-"${SCRATCHDIR}/${PRODUCT_NAME}_${GIT_REPO_BRANCH_OR_TAG}_${TARGET}_${TARGET_ARCH}-core"}
-export CORE_PKG_REAL_PATH="${CORE_PKG_PATH}/.real_$(date +%s)"
+export CORE_PKG_REAL_PATH="${CORE_PKG_PATH}/.real_${DATESTRING}"
 export CORE_PKG_TMP=${CORE_PKG_TMP:-"${SCRATCHDIR}/core_pkg_tmp"}
 
 export PKG_REPO_BASE=${PKG_REPO_BASE:-"${FREEBSD_SRC_DIR}/release/pkg_repos"}