diff --git a/libavfilter/af_afftfilt.c b/libavfilter/af_afftfilt.c index 8c75b4f0ae..8e41f52c12 100644 --- a/libavfilter/af_afftfilt.c +++ b/libavfilter/af_afftfilt.c @@ -94,7 +94,8 @@ static int config_input(AVFilterLink *inlink) char *saveptr = NULL; int ret = 0, ch, i; float overlap; - char *args, *last_expr = NULL; + char *args; + const char *last_expr = "1"; s->fft = av_fft_init(s->fft_bits, 0); s->ifft = av_fft_init(s->fft_bits, 1);