diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 9111ac300c..fb44ee2c71 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -6720,7 +6720,7 @@ static int shift_data(AVFormatContext *s)
 {
     int ret = 0, moov_size;
     MOVMuxContext *mov = s->priv_data;
-    int64_t pos, pos_end = avio_tell(s->pb);
+    int64_t pos, pos_end;
     uint8_t *buf, *read_buf[2];
     int read_buf_id = 0;
     int read_size[2];
diff --git a/libavformat/segafilmenc.c b/libavformat/segafilmenc.c
index bd7c03faf5..28cb7bfc85 100644
--- a/libavformat/segafilmenc.c
+++ b/libavformat/segafilmenc.c
@@ -212,7 +212,7 @@ static int film_init(AVFormatContext *format_context)
 static int shift_data(AVFormatContext *format_context, int64_t shift_size)
 {
     int ret = 0;
-    int64_t pos, pos_end = avio_tell(format_context->pb);
+    int64_t pos, pos_end;
     uint8_t *buf, *read_buf[2];
     int read_buf_id = 0;
     int read_size[2];