diff --git a/libavutil/internal.h b/libavutil/internal.h
index 5772b8a612..fe0b9d7a24 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -75,8 +75,6 @@
 #endif
 
 
-#define FF_MEMORY_POISON 0x2a
-
 #define FF_ALLOC_TYPED_ARRAY(p, nelem)  (p = av_malloc_array(nelem, sizeof(*p)))
 #define FF_ALLOCZ_TYPED_ARRAY(p, nelem) (p = av_calloc(nelem, sizeof(*p)))
 
diff --git a/libavutil/mem.c b/libavutil/mem.c
index 02d4cb791f..b205d3fb25 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -64,6 +64,8 @@ void  free(void *ptr);
 
 #define ALIGN (HAVE_SIMD_ALIGN_64 ? 64 : (HAVE_SIMD_ALIGN_32 ? 32 : 16))
 
+#define FF_MEMORY_POISON 0x2a
+
 /* NOTE: if you want to override these functions with your own
  * implementations (not recommended) you have to link libav* as
  * dynamic libraries and remove -Wl,-Bsymbolic from the linker flags.