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-rw-r--r--ext/mixed/js/audio-system.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/mixed/js/audio-system.js b/ext/mixed/js/audio-system.js
index f42fd657..584da2b1 100644
--- a/ext/mixed/js/audio-system.js
+++ b/ext/mixed/js/audio-system.js
@@ -37,7 +37,7 @@ class AudioSystem {
}
async createExpressionAudio(sources, expression, reading, details) {
- const key = [expression, reading];
+ const key = JSON.stringify([expression, reading]);
const cacheValue = this._cache.get(key);
if (typeof cacheValue !== 'undefined') {