diff --git a/nix/validate.nix b/nix/validate.nix
index 464fd1e..e433806 100644
--- a/nix/validate.nix
+++ b/nix/validate.nix
@@ -12,7 +12,9 @@ writeShellApplication {
 	];
 	text = ''
 		shopt -s globstar
-		find "''${PACKER_CONFIG_DIR}" -name '*_linux_amd64' -exec chmod +x '{}' ";"
+		if [ -e "''${PACKER_CONFIG_DIR}" ]; then
+			find "''${PACKER_CONFIG_DIR}" -name '*_linux_amd64' -exec chmod +x '{}' ";"
+		fi
 		packer init sources
 		for vars in distros/**/*.pkrvars.hcl; do
 			packer validate -except=upload "-var-file=''${vars}" sources/