diff --git a/core/hdd/inc/wlan_hdd_oemdata.h b/core/hdd/inc/wlan_hdd_oemdata.h
index c17ddedad5c2..61f3f5116a6e 100644
--- a/core/hdd/inc/wlan_hdd_oemdata.h
+++ b/core/hdd/inc/wlan_hdd_oemdata.h
@@ -37,7 +37,7 @@
 #ifdef FEATURE_OEM_DATA_SUPPORT
 
 #ifndef OEM_DATA_REQ_SIZE
-#define OEM_DATA_REQ_SIZE 280
+#define OEM_DATA_REQ_SIZE 500
 #endif
 
 #ifndef OEM_DATA_RSP_SIZE
diff --git a/core/mac/inc/sir_api.h b/core/mac/inc/sir_api.h
index 676178deeab1..c58bf9720d6c 100644
--- a/core/mac/inc/sir_api.h
+++ b/core/mac/inc/sir_api.h
@@ -845,13 +845,6 @@ typedef struct sSirSmeScanChanReq {
 
 #ifdef FEATURE_OEM_DATA_SUPPORT
 
-#ifndef OEM_DATA_REQ_SIZE
-#define OEM_DATA_REQ_SIZE 280
-#endif
-#ifndef OEM_DATA_RSP_SIZE
-#define OEM_DATA_RSP_SIZE 1724
-#endif
-
 typedef struct sSirOemDataReq {
 	uint16_t messageType;   /* eWNI_SME_OEM_DATA_REQ */
 	uint16_t messageLen;
diff --git a/core/mac/src/pe/include/lim_global.h b/core/mac/src/pe/include/lim_global.h
index dd405a8318a9..5529f6bbc70f 100644
--- a/core/mac/src/pe/include/lim_global.h
+++ b/core/mac/src/pe/include/lim_global.h
@@ -287,13 +287,6 @@ struct tLimScanResultNode {
 
 #ifdef FEATURE_OEM_DATA_SUPPORT
 
-#ifndef OEM_DATA_REQ_SIZE
-#define OEM_DATA_REQ_SIZE 280
-#endif
-#ifndef OEM_DATA_RSP_SIZE
-#define OEM_DATA_RSP_SIZE 1724
-#endif
-
 /* OEM Data related structure definitions */
 typedef struct sLimMlmOemDataReq {
 	struct qdf_mac_addr selfMacAddr;
diff --git a/core/sme/inc/oem_data_api.h b/core/sme/inc/oem_data_api.h
index f43d9a98d9aa..fcd1fee2009c 100644
--- a/core/sme/inc/oem_data_api.h
+++ b/core/sme/inc/oem_data_api.h
@@ -39,14 +39,6 @@
 #include "sir_mac_prot_def.h"
 #include "csr_link_list.h"
 
-#ifndef OEM_DATA_REQ_SIZE
-#define OEM_DATA_REQ_SIZE 280
-#endif
-
-#ifndef OEM_DATA_RSP_SIZE
-#define OEM_DATA_RSP_SIZE 1724
-#endif
-
 /* message subtype for internal purpose */
 #define OEM_MESSAGE_SUBTYPE_INTERNAL   0xdeadbeef
 #define OEM_MESSAGE_SUBTYPE_LEN 4
diff --git a/core/wma/inc/wma_if.h b/core/wma/inc/wma_if.h
index 831a9058023f..ea7be4ba6d09 100644
--- a/core/wma/inc/wma_if.h
+++ b/core/wma/inc/wma_if.h
@@ -659,9 +659,6 @@ typedef struct {
 
 #ifdef FEATURE_OEM_DATA_SUPPORT
 
-#ifndef OEM_DATA_REQ_SIZE
-#define OEM_DATA_REQ_SIZE 280
-#endif
 #ifndef OEM_DATA_RSP_SIZE
 #define OEM_DATA_RSP_SIZE 1724
 #endif