1 files changed, 1 insertions, 1 deletions
diff --git a/modules/core/module-fs.js b/modules/core/module-fs.js
index 4ba34b0..ae8b5f4 100644
--- a/modules/core/module-fs.js
+++ b/modules/core/module-fs.js
@@ -288,7 +288,7 @@ class FileSystemModule {
             const t = args && args[0] ? args[0] : '.';
             if (t === '.') {
                 const dir = this.terminal.fs.getCurrentDir(); if (!dir) return;
-                let total = 0; Object.keys(dir.content).forEach(k => { total += dir.content[k].content ? dir.content[k].content.length : 0; });
+                let total = 0; Object.keys(dir.content).forEach(k => { const node = dir.content[k]; total += node && typeof node.content === 'string' ? node.content.length : 0; });
                 this.terminal.print(total + '\t' + t);
             } else {
                 const c = this.terminal.fs.readFile(t);