diff --git a/src/components/Controls/SendDiagnosticCommand/index.jsx b/src/components/Controls/SendDiagnosticCommand/index.jsx
index 1e66d03..85fdd02 100644
--- a/src/components/Controls/SendDiagnosticCommand/index.jsx
+++ b/src/components/Controls/SendDiagnosticCommand/index.jsx
@@ -103,7 +103,7 @@ const SendDiagnosticCommand = ({ vin, token, classes }) => {
         color="primary"
         className={classes.submit}
         onClick={clickHandler}
-        disabled={!carState.online}
+        disabled={!carState ? true : !carState.online}
       >
         Send
       </Button>