diff --git a/assignment-client/src/audio/AudioMixer.cpp b/assignment-client/src/audio/AudioMixer.cpp
index a5d9a48d0c..bbd1fe4c07 100644
--- a/assignment-client/src/audio/AudioMixer.cpp
+++ b/assignment-client/src/audio/AudioMixer.cpp
@@ -710,7 +710,9 @@ void AudioMixer::run() {
         }
 
         const QString FILTER_KEY = "J-enable-filter";
-        _enableFilter = audioGroupObject[FILTER_KEY].toBool(_enableFilter);
+        if (audioGroupObject[FILTER_KEY].isBool()) {
+            _enableFilter = audioGroupObject[FILTER_KEY].toBool();
+        }
         if (_enableFilter) {
             qDebug() << "Filter enabled";
         }