diff --git a/wmi/inc/wmi_unified_api.h b/wmi/inc/wmi_unified_api.h
index 1bd40a0325..55951f42f0 100644
--- a/wmi/inc/wmi_unified_api.h
+++ b/wmi/inc/wmi_unified_api.h
@@ -629,7 +629,7 @@ QDF_STATUS wmi_unified_nat_keepalive_en_cmd(void *wmi_hdl, uint8_t vdev_id);
 QDF_STATUS wmi_unified_csa_offload_enable(void *wmi_hdl, uint8_t vdev_id);
 
 QDF_STATUS wmi_unified_start_oem_data_cmd(void *wmi_hdl,
-			  uint8_t data_len,
+			  uint32_t data_len,
 			  uint8_t *data);
 
 QDF_STATUS wmi_unified_dfs_phyerr_filter_offload_en_cmd(void *wmi_hdl,
diff --git a/wmi/inc/wmi_unified_priv.h b/wmi/inc/wmi_unified_priv.h
index 69c16abc58..bae209b3a7 100644
--- a/wmi/inc/wmi_unified_priv.h
+++ b/wmi/inc/wmi_unified_priv.h
@@ -518,7 +518,7 @@ QDF_STATUS (*send_wow_sta_ra_filter_cmd)(wmi_unified_t wmi_handle,
 QDF_STATUS (*send_nat_keepalive_en_cmd)(wmi_unified_t wmi_handle, uint8_t vdev_id);
 
 QDF_STATUS (*send_start_oem_data_cmd)(wmi_unified_t wmi_handle,
-			  uint8_t data_len,
+			  uint32_t data_len,
 			  uint8_t *data);
 
 QDF_STATUS
diff --git a/wmi/inc/wmi_unified_tlv.h b/wmi/inc/wmi_unified_tlv.h
index aa5a959a9c..5de7bae379 100644
--- a/wmi/inc/wmi_unified_tlv.h
+++ b/wmi/inc/wmi_unified_tlv.h
@@ -364,7 +364,7 @@ QDF_STATUS send_csa_offload_enable_cmd_tlv(wmi_unified_t wmi_handle,
 			uint8_t vdev_id);
 
 QDF_STATUS send_start_oem_data_cmd_tlv(wmi_unified_t wmi_handle,
-			  uint8_t data_len,
+			  uint32_t data_len,
 			  uint8_t *data);
 
 QDF_STATUS
diff --git a/wmi/src/wmi_unified_api.c b/wmi/src/wmi_unified_api.c
index 462f4f6945..f9b5884d97 100644
--- a/wmi/src/wmi_unified_api.c
+++ b/wmi/src/wmi_unified_api.c
@@ -2264,7 +2264,7 @@ QDF_STATUS wmi_unified_csa_offload_enable(void *wmi_hdl, uint8_t vdev_id)
  * Return: QDF_STATUS_SUCCESS on success and QDF_STATUS_E_FAILURE for failure
  */
 QDF_STATUS wmi_unified_start_oem_data_cmd(void *wmi_hdl,
-			  uint8_t data_len,
+			  uint32_t data_len,
 			  uint8_t *data)
 {
 	wmi_unified_t wmi_handle = (wmi_unified_t) wmi_hdl;
diff --git a/wmi/src/wmi_unified_tlv.c b/wmi/src/wmi_unified_tlv.c
index ba67a6ecf4..76287d8745 100644
--- a/wmi/src/wmi_unified_tlv.c
+++ b/wmi/src/wmi_unified_tlv.c
@@ -6774,7 +6774,7 @@ QDF_STATUS send_csa_offload_enable_cmd_tlv(wmi_unified_t wmi_handle,
  * Return: CDF status
  */
 QDF_STATUS send_start_oem_data_cmd_tlv(wmi_unified_t wmi_handle,
-			  uint8_t data_len,
+			  uint32_t data_len,
 			  uint8_t *data)
 {
 	wmi_buf_t buf;