diff --git a/samples/net/wifi/shell/boards/overlay_hostap_rw612.conf b/samples/net/wifi/shell/boards/overlay_hostap_rw612.conf
index eb79c28e55dc7d..79fa9b7ed39171 100644
--- a/samples/net/wifi/shell/boards/overlay_hostap_rw612.conf
+++ b/samples/net/wifi/shell/boards/overlay_hostap_rw612.conf
@@ -25,7 +25,9 @@ CONFIG_ENTROPY_GENERATOR=y
 CONFIG_MBEDTLS_PSA_CRYPTO_C=y
 CONFIG_MBEDTLS_ENTROPY_C=y
 CONFIG_MBEDTLS_SSL_MAX_CONTENT_LEN=8192
-CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=80000
+# mbedtls heap for enterprise case
+CONFIG_MBEDTLS_ENABLE_HEAP=y
+CONFIG_MBEDTLS_HEAP_SIZE=69952
 
 #priority
 CONFIG_WIFI_NM_WPA_SUPPLICANT_WQ_PRIO=3