diff --git a/index.js b/index.js
index 1645d19..250628f 100644
--- a/index.js
+++ b/index.js
@@ -17,7 +17,7 @@ client.on("message", message => {
 
     if(content.substr(0,1) === "!") {
         let boundary = content.indexOf(' ');
-        let prefix = content.substr(0, boundary);
+        let prefix = boundary === -1 ? content : content.substr(0, boundary);
 
         moduleManager.execute(prefix, message);
     }