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-rw-r--r--src/lib/audio_filter.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/audio_filter.cc b/src/lib/audio_filter.cc
index 2cf1cf604..10f3849df 100644
--- a/src/lib/audio_filter.cc
+++ b/src/lib/audio_filter.cc
@@ -67,7 +67,7 @@ AudioFilter::sinc_blackman (float cutoff, bool invert) const
}
shared_ptr<AudioBuffers>
-AudioFilter::run (shared_ptr<AudioBuffers> in)
+AudioFilter::run (shared_ptr<const AudioBuffers> in)
{
shared_ptr<AudioBuffers> out (new AudioBuffers (in->channels(), in->frames()));