diff --git a/media/mtransport/third_party/nrappkit/src/util/libekr/r_memory.c b/media/mtransport/third_party/nrappkit/src/util/libekr/r_memory.c
index a5c709d413..e9d001cec1 100644
--- a/media/mtransport/third_party/nrappkit/src/util/libekr/r_memory.c
+++ b/media/mtransport/third_party/nrappkit/src/util/libekr/r_memory.c
@@ -51,7 +51,7 @@ typedef struct r_malloc_chunk_ {
 #endif
      UCHAR type;
      UINT4 size;
-     UCHAR memory[1];
+     UINT8 memory[1];
 } r_malloc_chunk;
 
 #define CHUNK_MEMORY_OFFSET                    offsetof(struct r_malloc_chunk_, memory)