--- a/libavcodec/aaccoder.c
+++ b/libavcodec/aaccoder.c
@@ -60,6 +60,8 @@
  * replace low energy non zero bands */
 #define NOISE_LAMBDA_REPLACE 1.948f
 
+#undef B0
+
 #include "libavcodec/aaccoder_trellis.h"
 
 typedef float (*quantize_and_encode_band_func)(struct AACEncContext *s, PutBitContext *pb,

--- a/libavcodec/hevc_mvs.c
+++ b/libavcodec/hevc_mvs.c
@@ -25,6 +25,8 @@
 #include "hevcdec.h"
 #include "threadframe.h"
 
+#undef B0
+
 static const uint8_t l0_l1_cand_idx[12][2] = {
     { 0, 1, },
     { 1, 0, },
--- a/libavcodec/opus_pvq.c
+++ b/libavcodec/opus_pvq.c
@@ -36,6 +36,8 @@
 #define CELT_PVQ_U(n, k) (ff_celt_pvq_u_row[FFMIN(n, k)][FFMAX(n, k)])
 #define CELT_PVQ_V(n, k) (CELT_PVQ_U(n, k) + CELT_PVQ_U(n, (k) + 1))
 
+#undef B0
+
 static inline int16_t celt_cos(int16_t x)
 {
     x = (MUL16(x, x) + 4096) >> 13;