diff --git a/libavcodec/avfft.c b/libavcodec/avfft.c
index 26b3d4b2d2..2200f37708 100644
--- a/libavcodec/avfft.c
+++ b/libavcodec/avfft.c
@@ -27,7 +27,7 @@
 
 FFTContext *av_fft_init(int nbits, int inverse)
 {
-    FFTContext *s = av_malloc(sizeof(*s));
+    FFTContext *s = av_mallocz(sizeof(*s));
 
     if (s && ff_fft_init(s, nbits, inverse))
         av_freep(&s);