diff --git a/src/main/java/xyz/vallat/louis/MovieQuoteBot.java b/src/main/java/xyz/vallat/louis/MovieQuoteBot.java
index 7e27662..2c7448f 100644
--- a/src/main/java/xyz/vallat/louis/MovieQuoteBot.java
+++ b/src/main/java/xyz/vallat/louis/MovieQuoteBot.java
@@ -5,8 +5,14 @@ import org.slf4j.LoggerFactory;
 
 public class MovieQuoteBot {
 
+    private static final Logger logger = LoggerFactory.getLogger(MovieQuoteBot.class.getCanonicalName());
+    public static final String DISCORD_TOKEN_ENVIRONMENT = "DISCORD_TOKEN";
+
     public static void main(String[] args) {
-        Logger logger = LoggerFactory.getLogger(MovieQuoteBot.class.getCanonicalName());
+        if (System.getenv(DISCORD_TOKEN_ENVIRONMENT) == null && args.length == 0) {
+            logger.error("Missing token. Exiting.");
+            System.exit(1);
+        }
         logger.debug("Hello World!");
     }