diff --git a/javascript/LeftAndMain.js b/javascript/LeftAndMain.js
index e9275b45..e4975784 100644
--- a/javascript/LeftAndMain.js
+++ b/javascript/LeftAndMain.js
@@ -491,7 +491,7 @@ function errorMessage(msg, fullMessage) {
 		} catch(er) {
 			fullMessage = "";
 		}
-		console.log(fullMessage);
+		console.error(fullMessage);
 	}
 	
 	msg = msg.replace(/\n/g,'<br>');