diff --git a/src/decoder/flac.rs b/src/decoder/flac.rs
index 7b2d360e..ce6a33bc 100644
--- a/src/decoder/flac.rs
+++ b/src/decoder/flac.rs
@@ -124,7 +124,7 @@ fn is_flac<R>(mut data: R) -> bool
 where
     R: Read + Seek,
 {
-    let stream_pos = data.seek(SeekFrom::Current(0)).unwrap();
+    let stream_pos = data.stream_position().unwrap();
 
     if FlacReader::new(data.by_ref()).is_err() {
         data.seek(SeekFrom::Start(stream_pos)).unwrap();
diff --git a/src/decoder/vorbis.rs b/src/decoder/vorbis.rs
index 11a5bd9e..a02cbc0c 100644
--- a/src/decoder/vorbis.rs
+++ b/src/decoder/vorbis.rs
@@ -109,7 +109,7 @@ fn is_vorbis<R>(mut data: R) -> bool
 where
     R: Read + Seek,
 {
-    let stream_pos = data.seek(SeekFrom::Current(0)).unwrap();
+    let stream_pos = data.stream_position().unwrap();
 
     if OggStreamReader::new(data.by_ref()).is_err() {
         data.seek(SeekFrom::Start(stream_pos)).unwrap();
diff --git a/src/decoder/wav.rs b/src/decoder/wav.rs
index 5c611ee9..5b5c4267 100644
--- a/src/decoder/wav.rs
+++ b/src/decoder/wav.rs
@@ -154,7 +154,7 @@ fn is_wave<R>(mut data: R) -> bool
 where
     R: Read + Seek,
 {
-    let stream_pos = data.seek(SeekFrom::Current(0)).unwrap();
+    let stream_pos = data.stream_position().unwrap();
 
     if WavReader::new(data.by_ref()).is_err() {
         data.seek(SeekFrom::Start(stream_pos)).unwrap();