diff --git a/libavcodec/get_bits.h b/libavcodec/get_bits.h
index 645946df14..2f1a851853 100644
--- a/libavcodec/get_bits.h
+++ b/libavcodec/get_bits.h
@@ -127,7 +127,7 @@ for examples see get_bits, show_bits, skip_bits, get_vlc
 
 #   define OPEN_READER(name, gb)                \
     unsigned int name##_index = (gb)->index;    \
-    int name##_cache
+    av_unused int name##_cache
 
 #   define CLOSE_READER(name, gb) (gb)->index = name##_index