diff --git a/src/coding/coding.h b/src/coding/coding.h
index 8afd4385..e2f8b8bb 100644
--- a/src/coding/coding.h
+++ b/src/coding/coding.h
@@ -280,7 +280,7 @@ ffmpeg_codec_data * init_ffmpeg_switch_opus(STREAMFILE *streamFile, off_t start_
 ffmpeg_codec_data * init_ffmpeg_ue4_opus(STREAMFILE *streamFile, off_t start_offset, size_t data_size, int channels, int skip, int sample_rate);
 ffmpeg_codec_data * init_ffmpeg_ea_opus(STREAMFILE *streamFile, off_t start_offset, size_t data_size, int channels, int skip, int sample_rate);
 
-size_t switch_opus_get_samples(off_t offset, size_t data_size, int sample_rate, STREAMFILE *streamFile);
+size_t switch_opus_get_samples(off_t offset, size_t data_size, STREAMFILE *streamFile);
 
 size_t switch_opus_get_encoder_delay(off_t offset, STREAMFILE *streamFile);
 size_t ue4_opus_get_encoder_delay(off_t offset, STREAMFILE *streamFile);
diff --git a/src/coding/ffmpeg_decoder_custom_opus.c b/src/coding/ffmpeg_decoder_custom_opus.c
index a2adb18f..fe9c405a 100644
--- a/src/coding/ffmpeg_decoder_custom_opus.c
+++ b/src/coding/ffmpeg_decoder_custom_opus.c
@@ -468,7 +468,7 @@ static size_t opus_get_packet_samples(const uint8_t * buf, int len) {
     return opus_packet_get_nb_frames(buf, len) * opus_packet_get_samples_per_frame(buf, 48000);
 }
 
-static size_t custom_opus_get_samples(off_t offset, size_t data_size, int sample_rate, STREAMFILE *streamFile, opus_type_t type) {
+static size_t custom_opus_get_samples(off_t offset, size_t data_size, STREAMFILE *streamFile, opus_type_t type) {
     size_t num_samples = 0;
     off_t end_offset = offset + data_size;
 
@@ -508,8 +508,8 @@ static size_t custom_opus_get_samples(off_t offset, size_t data_size, int sample
     return num_samples;
 }
 
-size_t switch_opus_get_samples(off_t offset, size_t data_size, int sample_rate, STREAMFILE *streamFile) {
-    return custom_opus_get_samples(offset, data_size, sample_rate, streamFile, OPUS_SWITCH);
+size_t switch_opus_get_samples(off_t offset, size_t data_size, STREAMFILE *streamFile) {
+    return custom_opus_get_samples(offset, data_size, streamFile, OPUS_SWITCH);
 }
 
 
diff --git a/src/meta/nxa.c b/src/meta/nxa.c
index 3c385ad2..fc05d681 100644
--- a/src/meta/nxa.c
+++ b/src/meta/nxa.c
@@ -40,7 +40,7 @@ VGMSTREAM * init_vgmstream_opus_nxa(STREAMFILE *streamFile) {
         vgmstream->layout_type = layout_none;
 
         if (vgmstream->num_samples == 0) {
-            vgmstream->num_samples = switch_opus_get_samples(start_offset, data_size, vgmstream->sample_rate, streamFile) - skip;
+            vgmstream->num_samples = switch_opus_get_samples(start_offset, data_size, streamFile) - skip;
         }
     }
 #else
diff --git a/src/meta/opus.c b/src/meta/opus.c
index 125e1e9d..d99e8a87 100644
--- a/src/meta/opus.c
+++ b/src/meta/opus.c
@@ -50,7 +50,7 @@ static VGMSTREAM * init_vgmstream_opus(STREAMFILE *streamFile, meta_t meta_type,
         vgmstream->layout_type = layout_none;
 
         if (vgmstream->num_samples == 0) {
-            vgmstream->num_samples = switch_opus_get_samples(start_offset, data_size, vgmstream->sample_rate, streamFile) - skip;
+            vgmstream->num_samples = switch_opus_get_samples(start_offset, data_size, streamFile) - skip;
         }
     }
 #else