diff --git a/examples/wifi/iperf/sdkconfig.defaults.esp32s31 b/examples/wifi/iperf/sdkconfig.defaults.esp32s31
index def485ba9dd..f71c3e9292e 100644
--- a/examples/wifi/iperf/sdkconfig.defaults.esp32s31
+++ b/examples/wifi/iperf/sdkconfig.defaults.esp32s31
@@ -22,7 +22,7 @@ CONFIG_LWIP_IP_REASS_MAX_PBUFS=15
 # Serial flasher config
 #
 CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
-CONFIG_ESPTOOLPY_FLASHFREQ_40M=y
+CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
 
 
 CONFIG_PARTITION_TABLE_SINGLE_APP_LARGE=y