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-rw-r--r--ext/mixed/js/core.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/mixed/js/core.js b/ext/mixed/js/core.js
index 6d0a5f0e..db7fc69b 100644
--- a/ext/mixed/js/core.js
+++ b/ext/mixed/js/core.js
@@ -319,7 +319,7 @@ const yomichan = (() => {
getTemporaryListenerResult(eventHandler, userCallback, timeout=null) {
if (!(
- typeof eventHandler.addListener === 'function' ||
+ typeof eventHandler.addListener === 'function' &&
typeof eventHandler.removeListener === 'function'
)) {
throw new Error('Event handler type not supported');