diff --git a/src/media-sink.ts b/src/media-sink.ts
index 6fd28b8..0edc4dd 100644
--- a/src/media-sink.ts
+++ b/src/media-sink.ts
@@ -2095,7 +2095,7 @@ class AudioDecoderWrapper extends DecoderWrapper<AudioSample> {
 		const sampleHandler = (sample: AudioSample) => {
 			let sampleTimestamp = sample.timestamp;
 
-			if (this.expectedFirstTimestamp && this.currentTimestamp === null) {
+			if (this.expectedFirstTimestamp !== null && this.currentTimestamp === null) {
 				this.timestampOffset = this.expectedFirstTimestamp - sampleTimestamp; ;
 			}