diff --git a/src/apps.js b/src/apps.js
index 55d2b5159..289839a67 100644
--- a/src/apps.js
+++ b/src/apps.js
@@ -336,7 +336,7 @@ function validateEnv(env) {
 function validateBinds(binds) {
     for (let name of Object.keys(binds)) {
         // just have friendly characters under /media
-        if (!/^[-0-9a-zA-Z_@$=#.%+]+$/.test(name)) return new BoxError(BoxError.BAD_FIELD, 'Invalid bind name');
+        if (!/^[-0-9a-zA-Z_@$=#.%+]+$/.test(name)) return new BoxError(BoxError.BAD_FIELD, `Invalid bind name: ${name}`);
 
         const bind = binds[name];