diff --git a/pkgs/build-support/setup-hooks/set-source-date-epoch-to-latest.sh b/pkgs/build-support/setup-hooks/set-source-date-epoch-to-latest.sh
index a2449b2704a..6bf9a65b35a 100644
--- a/pkgs/build-support/setup-hooks/set-source-date-epoch-to-latest.sh
+++ b/pkgs/build-support/setup-hooks/set-source-date-epoch-to-latest.sh
@@ -4,7 +4,7 @@ updateSourceDateEpoch() {
     # Get the last modification time of all regular files, sort them,
     # and get the most recent. Maybe we should use
     # https://github.com/0-wiz-0/findnewest here.
-    local -a res=($(find "$path" -type f -not -newer "$NIX_BUILD_TOP/.." -printf '%T@ %p\n' | sort -n | tail -n1))
+    local -a res=($(find "$path" -type f -not -newer "$NIX_BUILD_TOP/.." -printf '%T@ %p\0' | sort -n --zero-terminated | tail -n1 --zero-terminated))
     local time="${res[0]//\.[0-9]*/}" # remove the fraction part
     local newestFile="${res[1]}"