diff --git a/src/coding/ogg_vorbis_decoder.c b/src/coding/ogg_vorbis_decoder.c
index 5ca7f47d..198d14aa 100644
--- a/src/coding/ogg_vorbis_decoder.c
+++ b/src/coding/ogg_vorbis_decoder.c
@@ -99,6 +99,7 @@ void reset_ogg_vorbis(VGMSTREAM *vgmstream) {
     ogg_vorbis_codec_data *data = vgmstream->codec_data;
     if (!data) return;
 
+    /* this seek cleans internal buffers */
     ov_pcm_seek(&data->ogg_vorbis_file, 0);
 }
 
@@ -106,6 +107,8 @@ void seek_ogg_vorbis(VGMSTREAM *vgmstream, int32_t num_sample) {
     ogg_vorbis_codec_data *data = vgmstream->codec_data;
     if (!data) return;
 
+    /* this seek crosslaps to avoid possible clicks, so seeking to 0 will
+     * decode a bit differently than ov_pcm_seek */
     ov_pcm_seek_lap(&data->ogg_vorbis_file, num_sample);
 }
 
diff --git a/src/streamfile.c b/src/streamfile.c
index 6ce19f75..bf1228cf 100644
--- a/src/streamfile.c
+++ b/src/streamfile.c
@@ -890,7 +890,7 @@ size_t read_string(char * buf, size_t maxsize, off_t offset, STREAMFILE *streamF
             if (buf) buf[pos] = '\0';
             return maxsize;
         }
-        if (c < 0x20 || c > 0xA5)
+        if (c < 0x20 || (uint8_t)c > 0xA5)
             goto fail;
     }