diff --git a/boards/esp32-olimex-evb/include/gpio_params.h b/boards/esp32-olimex-evb/include/gpio_params.h
index 581da248a326cb3433a082812234afad8805e544..5228cda5ba74a459e19590c282deea8468d2c534 100644
--- a/boards/esp32-olimex-evb/include/gpio_params.h
+++ b/boards/esp32-olimex-evb/include/gpio_params.h
@@ -41,7 +41,7 @@ static const  saul_gpio_params_t saul_gpio_params[] =
         .name = "BUT1",
         .pin = BUTTON0_PIN,
         .mode = GPIO_IN,
-        .flags = 0
+        .flags = SAUL_GPIO_INVERTED
     },
 };
 
diff --git a/boards/esp32-wroom-32/include/gpio_params.h b/boards/esp32-wroom-32/include/gpio_params.h
index 5f8a1af0713590eefb4585732f59d1c5d0c4281c..d44c00abcbd1d37897cd4f24818027549eab534d 100644
--- a/boards/esp32-wroom-32/include/gpio_params.h
+++ b/boards/esp32-wroom-32/include/gpio_params.h
@@ -33,7 +33,7 @@ static const  saul_gpio_params_t saul_gpio_params[] =
         .name = "BOOT",
         .pin = BUTTON0_PIN,
         .mode = GPIO_IN,
-        .flags = 0
+        .flags = SAUL_GPIO_INVERTED
     },
 };