fixed fft

1 files changed, 1 insertions, 1 deletions

diff --git a/fft/fft.c b/fft/fft.c
index 69c0971..7cb5374 100644
--- a/fft/fft.c
+++ b/fft/fft.c
@@ -4,7 +4,7 @@
 
 void fft_write(struct fmplayer_fft_data *data, const int16_t *buf, unsigned len) {
   if (len > FFTLEN) {
-    unsigned discard = FFTLEN - len;
+    unsigned discard = len - FFTLEN;
     buf += discard*2;
     len = FFTLEN;
   }