diff --git a/packages/safe-chain/src/installLocation.js b/packages/safe-chain/src/installLocation.js
index efe687a..52125be 100644
--- a/packages/safe-chain/src/installLocation.js
+++ b/packages/safe-chain/src/installLocation.js
@@ -1,5 +1,8 @@
 import path from "path";
 
+/** @type {NodeJS.Process & { pkg?: unknown }} */
+const processWithPkg = process;
+
 /**
  * @param {string} executablePath
  * @returns {string | undefined}
@@ -28,7 +31,7 @@ export function deriveInstallDirFromExecutablePath(executablePath) {
  * @returns {string | undefined}
  */
 export function getInstalledSafeChainDir(options = {}) {
-  const isPackaged = options.isPackaged ?? Boolean(process.pkg);
+  const isPackaged = options.isPackaged ?? Boolean(processWithPkg.pkg);
   if (!isPackaged) {
     return undefined;
   }
diff --git a/packages/safe-chain/src/shell-integration/startup-scripts/init-posix.sh b/packages/safe-chain/src/shell-integration/startup-scripts/init-posix.sh
index 4235276..ebc10c4 100644
--- a/packages/safe-chain/src/shell-integration/startup-scripts/init-posix.sh
+++ b/packages/safe-chain/src/shell-integration/startup-scripts/init-posix.sh
@@ -5,7 +5,7 @@ _get_safe_chain_script_path() {
     fi
 
     if [ -n "${ZSH_VERSION:-}" ]; then
-        eval 'printf "%s\n" "${(%):-%N}"'
+        eval 'printf "%s\n" "${(%):-%x}"'
         return
     fi