diff --git a/arch/xtensa/src/esp32/esp32_spiram.c b/arch/xtensa/src/esp32/esp32_spiram.c
index 90658c9cfd4..5274f29428a 100644
--- a/arch/xtensa/src/esp32/esp32_spiram.c
+++ b/arch/xtensa/src/esp32/esp32_spiram.c
@@ -67,9 +67,9 @@
 
 /* Let's to assume SPIFLASH SPEED == SPIRAM SPEED for now */
 
-#if CONFIG_ESP32_SPIRAM_SPEED_40M
+#if defined(CONFIG_ESP32_SPIRAM_SPEED_40M)
 #  define PSRAM_SPEED PSRAM_CACHE_F40M_S40M
-#elif CONFIG_ESP32_SPIRAM_SPEED_80M
+#elif defined(CONFIG_ESP32_SPIRAM_SPEED_80M)
 #  define PSRAM_SPEED PSRAM_CACHE_F80M_S80M
 #else
 #  error "FLASH speed can only be equal to or higher than SRAM speed while SRAM is enabled!"