diff --git a/boards/xtensa/esp32/esp32-devkitc/configs/psram/defconfig b/boards/xtensa/esp32/esp32-devkitc/configs/psram/defconfig
index 26cb4bdaca2..67da7c9bfed 100644
--- a/boards/xtensa/esp32/esp32-devkitc/configs/psram/defconfig
+++ b/boards/xtensa/esp32/esp32-devkitc/configs/psram/defconfig
@@ -55,5 +55,6 @@ CONFIG_START_MONTH=12
 CONFIG_START_YEAR=2011
 CONFIG_SYSLOG_BUFFER=y
 CONFIG_SYSTEM_NSH=y
+CONFIG_TESTING_HEAP=y
 CONFIG_TESTING_SMP=y
 CONFIG_UART0_SERIAL_CONSOLE=y
diff --git a/boards/xtensa/esp32/esp32-devkitc/configs/psram_usrheap/defconfig b/boards/xtensa/esp32/esp32-devkitc/configs/psram_usrheap/defconfig
index 219eb93fc5d..94df13d6406 100644
--- a/boards/xtensa/esp32/esp32-devkitc/configs/psram_usrheap/defconfig
+++ b/boards/xtensa/esp32/esp32-devkitc/configs/psram_usrheap/defconfig
@@ -58,6 +58,7 @@ CONFIG_START_YEAR=2011
 CONFIG_SYSLOG_BUFFER=y
 CONFIG_SYSTEM_NSH=y
 CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_HEAP=y
 CONFIG_TESTING_OSTEST=y
 CONFIG_TESTING_SMP=y
 CONFIG_UART0_SERIAL_CONSOLE=y