diff --git a/vp8/encoder/onyx_if.c b/vp8/encoder/onyx_if.c
index 4e2cd0ff7..c7d81b17f 100644
--- a/vp8/encoder/onyx_if.c
+++ b/vp8/encoder/onyx_if.c
@@ -355,8 +355,6 @@ static void dealloc_compressor_data(VP8_COMP *cpi)
     /* Activity mask based per mb zbin adjustments */
     vpx_free(cpi->mb_activity_map);
     cpi->mb_activity_map = 0;
-    vpx_free(cpi->mb_norm_activity_map);
-    cpi->mb_norm_activity_map = 0;
 
     vpx_free(cpi->mb.pip);
     cpi->mb.pip = 0;
@@ -1097,11 +1095,6 @@ void vp8_alloc_compressor_data(VP8_COMP *cpi)
                     vpx_calloc(sizeof(*cpi->mb_activity_map),
                     cm->mb_rows * cm->mb_cols));
 
-    vpx_free(cpi->mb_norm_activity_map);
-    CHECK_MEM_ERROR(cpi->mb_norm_activity_map,
-                    vpx_calloc(sizeof(*cpi->mb_norm_activity_map),
-                    cm->mb_rows * cm->mb_cols));
-
     /* allocate memory for storing last frame's MVs for MV prediction. */
     vpx_free(cpi->lfmv);
     CHECK_MEM_ERROR(cpi->lfmv, vpx_calloc((cm->mb_rows+2) * (cm->mb_cols+2),
diff --git a/vp8/encoder/onyx_int.h b/vp8/encoder/onyx_int.h
index 5cff899ac..ed9c7624f 100644
--- a/vp8/encoder/onyx_int.h
+++ b/vp8/encoder/onyx_int.h
@@ -649,7 +649,6 @@ typedef struct VP8_COMP
     /* Per MB activity measurement */
     unsigned int activity_avg;
     unsigned int * mb_activity_map;
-    int * mb_norm_activity_map;
 
     /* Record of which MBs still refer to last golden frame either
      * directly or through 0,0