diff --git a/libavcodec/ac3.h b/libavcodec/ac3.h
index 1e8a5ba2db4c1fdf1beec2f43961a1099a8d6615..9825195c39089297c72a4e6cbd8e0db39562b128 100644
--- a/libavcodec/ac3.h
+++ b/libavcodec/ac3.h
@@ -43,6 +43,7 @@ typedef struct AC3BitAllocParameters {
     int cplfleak, cplsleak;
 } AC3BitAllocParameters;
 
+#if 0
 extern const uint16_t ac3_freqs[3];
 extern const uint16_t ac3_bitratetab[19];
 extern const int16_t ac3_window[256];
@@ -52,6 +53,7 @@ extern const uint16_t sgaintab[4];
 extern const uint16_t dbkneetab[4];
 extern const uint16_t floortab[8];
 extern const uint16_t fgaintab[8];
+#endif
 
 void ac3_common_init(void);
 void ac3_parametric_bit_allocation(AC3BitAllocParameters *s, uint8_t *bap,