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-rw-r--r--formats/format_wav_gsm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/formats/format_wav_gsm.c b/formats/format_wav_gsm.c
index ea0f95e22..3a1dfdfb3 100644
--- a/formats/format_wav_gsm.c
+++ b/formats/format_wav_gsm.c
@@ -336,7 +336,7 @@ static int write_header(FILE *f)
return -1;
}
/* 32: Subchunk 1: Block align */
- if (fwrite(&block_align, 1, 2, f) != 4) {
+ if (fwrite(&block_align, 1, 4, f) != 4) {
ast_log(LOG_WARNING, "Unable to write header\n");
return -1;
}