diff --git a/samples/cellular/nrf_cloud_multi_service/boards/thingy91x_nrf9151_ns.conf b/samples/cellular/nrf_cloud_multi_service/boards/thingy91x_nrf9151_ns.conf
index 6f9c6a32c8f7..d4a4fef18e4e 100644
--- a/samples/cellular/nrf_cloud_multi_service/boards/thingy91x_nrf9151_ns.conf
+++ b/samples/cellular/nrf_cloud_multi_service/boards/thingy91x_nrf9151_ns.conf
@@ -64,7 +64,7 @@ CONFIG_NET_RX_STACK_SIZE=512
 CONFIG_NET_TC_TX_COUNT=1
 CONFIG_NET_MAX_CONTEXTS=5
 
-CONFIG_NRF_WIFI_CTRL_HEAP_SIZE=22000
+CONFIG_NRF_WIFI_CTRL_HEAP_SIZE=10240
 CONFIG_HEAP_MEM_POOL_IGNORE_MIN=y
 CONFIG_MAIN_STACK_SIZE=2048
 CONFIG_NET_MGMT_EVENT_STACK_SIZE=1024
diff --git a/samples/cellular/nrf_cloud_multi_service/overlay-nrf7002ek-wifi-scan-only.conf b/samples/cellular/nrf_cloud_multi_service/overlay-nrf7002ek-wifi-scan-only.conf
index e17971b17957..92ae19286d9d 100644
--- a/samples/cellular/nrf_cloud_multi_service/overlay-nrf7002ek-wifi-scan-only.conf
+++ b/samples/cellular/nrf_cloud_multi_service/overlay-nrf7002ek-wifi-scan-only.conf
@@ -32,7 +32,7 @@ CONFIG_MBEDTLS=n
 # Stack/heap tweaks needed to support Wi-Fi.
 # Heap allocation should be changed when CONFIG_LOCATION_METHOD_WIFI_SCANNING_RESULTS_MAX_CNT
 # and CONFIG_NRF_WIFI_SCAN_MAX_BSS_CNT (which should be the same value) are changed.
-CONFIG_NRF_WIFI_CTRL_HEAP_SIZE=20000
+CONFIG_NRF_WIFI_CTRL_HEAP_SIZE=10240
 CONFIG_HEAP_MEM_POOL_IGNORE_MIN=y
 CONFIG_MAIN_STACK_SIZE=2048
 CONFIG_NET_MGMT_EVENT_STACK_SIZE=1024