diff --git a/aom_dsp/prob.h b/aom_dsp/prob.h
index 4eb93779385969530dc60d9174ded0efcb0f5f3d..916b7513ca448539049ad49c9b72c6781f9c1762 100644
--- a/aom_dsp/prob.h
+++ b/aom_dsp/prob.h
@@ -31,8 +31,11 @@ extern "C" {
 typedef uint16_t aom_cdf_prob;
 
 #define CDF_SIZE(x) ((x) + 1)
-
+#if CONFIG_CDF_STORAGE_REDUCTION
+#define CDF_PROB_BITS 14
+#else
 #define CDF_PROB_BITS 15
+#endif
 #define CDF_PROB_TOP (1 << CDF_PROB_BITS)
 #define CDF_INIT_TOP 32768
 #define CDF_SHIFT (15 - CDF_PROB_BITS)
diff --git a/build/cmake/aom_config_defaults.cmake b/build/cmake/aom_config_defaults.cmake
index 79638ca804c0c1e1083fa7d0b74225810af752a6..a4f5aed170e2c89b015d260d553333534ae1ebf3 100644
--- a/build/cmake/aom_config_defaults.cmake
+++ b/build/cmake/aom_config_defaults.cmake
@@ -92,6 +92,7 @@ set(CONFIG_AMVR 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_AOM_QM 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_AOM_QM_EXT 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_BGSPRITE 0 CACHE NUMBER "AV1 experiment flag.")
+set(CONFIG_CDF_STORAGE_REDUCTION 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_CFL 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_CICP 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_COLORSPACE_HEADERS 0 CACHE NUMBER "AV1 experiment flag.")