diff --git a/nix-develop-gha.sh b/nix-develop-gha.sh
index 82d8bf5..5d30db8 100755
--- a/nix-develop-gha.sh
+++ b/nix-develop-gha.sh
@@ -26,7 +26,7 @@ while IFS='=' read -r -d '' n v; do
 		continue
 	fi
 	if (("$(wc -l <<<"$v")" > 1)); then
-		delimiter=$(openssl rand -base64 18)
+		delimiter=BzcqNQnW6x7hfGlLbvCyDlvD
 		if contains "$delimiter" "$v"; then
 			echo "Environment variable $n contains randomly generated string $delimiter, file an issue and buy a lottery ticket."
 			exit 1