diff --git a/common/src/main/java/ctbrec/sites/mfc/MyFreeCamsClient.java b/common/src/main/java/ctbrec/sites/mfc/MyFreeCamsClient.java
index 3ba73d0a..6023fa54 100644
--- a/common/src/main/java/ctbrec/sites/mfc/MyFreeCamsClient.java
+++ b/common/src/main/java/ctbrec/sites/mfc/MyFreeCamsClient.java
@@ -158,7 +158,9 @@ public class MyFreeCamsClient {
                     connecting = false;
                     sessionStates.invalidateAll();
                     models.invalidateAll();
-                    LOG.trace("open: [{}]", response.body().string());
+                    // WebSocketListener's response body is stripped, so we cannot call .string() on it (remove the line maybe?)
+                    var body = response.body();
+                    LOG.trace("open: [{}]", body.contentLength() != 0 ? body.string() : "");
                     webSocket.send("fcsws_20180422\n");
                     login(webSocket);
                     heartBeat = System.currentTimeMillis();