diff --git a/NEWS b/NEWS
index 933a980db..b1cc2cf04 100644
--- a/NEWS
+++ b/NEWS
@@ -9,6 +9,7 @@ ver 0.19.3 (not yet released)
   - audiofile: fix crash while playing streams
   - audiofile: fix bit rate calculation
   - ffmpeg: support opus
+* fix distorted audio with soxr resampler
 
 ver 0.19.2 (2014/11/02)
 * input
diff --git a/src/pcm/SoxrResampler.cxx b/src/pcm/SoxrResampler.cxx
index 56b9760d5..b9d6fc099 100644
--- a/src/pcm/SoxrResampler.cxx
+++ b/src/pcm/SoxrResampler.cxx
@@ -147,7 +147,8 @@ SoxrPcmResampler::Resample(ConstBuffer<void> src, Error &error)
 
 	const size_t n_frames = src.size / frame_size;
 
-	const size_t o_frames = size_t(n_frames * ratio + 0.5);
+	/* always round up: worst case output buffer size */
+	const size_t o_frames = size_t(n_frames * ratio) + 1;
 
 	float *output_buffer = (float *)buffer.Get(o_frames * frame_size);