diff --git a/libcelt/celt.c b/libcelt/celt.c
index 23d2e3088e644a2c1f81502dd79bf7998f881f33..1fcda8c2b56927a7a884c76d3b2a86c94813932d 100644
--- a/libcelt/celt.c
+++ b/libcelt/celt.c
@@ -952,7 +952,7 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
    {
       celt_int32 den=st->mode->Fs>>BITRES;
       vbr_rate=(st->bitrate*frame_size+(den>>1))/den;
-      effectiveBytes = vbr_rate>>3;
+      effectiveBytes = vbr_rate>>(3+BITRES);
    } else {
       celt_int32 tmp;
       vbr_rate = 0;