diff --git a/README.md b/README.md
index 958b4abb..94b1e70f 100644
--- a/README.md
+++ b/README.md
@@ -179,7 +179,7 @@ by pressing the button of the device.
 
 # Sensors and Peripherals
 
-You can add up to 3 user defined sensors. Insert your sensor's payload scheme in [*sensor.cpp*](src/sensor.cpp). Bosch BMP180 / BME280 / BME680 environment sensors are supported, to activate configure BME in board's hal file before build. If you need Bosch's proprietary BSEC libraray (e.g. to get indoor air quality value from BME680) further enable *build_flags_sensors*, which comes on the price of reduced RAM and increased build size. Furthermore, SDS011, RTC DS3231, generic serial NMEA GPS, I2C LoPy GPS are supported, and to be configured in board's hal file. See [*generic.h*](src/hal/generic.h) for all options and for proper configuration of BME280/BME680.
+You can add up to 3 user defined sensors. Insert your sensor's payload scheme in [*sensor.cpp*](src/sensor.cpp). Bosch BMP180 / BME280 / BME680 environment sensors are supported, to activate configure BME in board's hal file before build. Furthermore, SDS011, RTC DS3231, generic serial NMEA GPS, I2C LoPy GPS are supported, and to be configured in board's hal file. See [*generic.h*](src/hal/generic.h) for all options and for proper configuration of BME280/BME680.
 
 Output of user sensor data can be switched by user remote control command 0x14 sent to Port 2. 
 
diff --git a/platformio_orig.ini b/platformio_orig.ini
index 44cbf0e7..c76c1b96 100644
--- a/platformio_orig.ini
+++ b/platformio_orig.ini
@@ -110,11 +110,8 @@ build_flags_basic =
     '-D LIBPAX_WIFI'
     '-D LIBPAX_BLE'
     '-D LIBPAX_ARDUINO'
-build_flags_sensors =
-    -lalgobsec
 build_flags_all =
     ${common.build_flags_basic}
-    ${common.build_flags_sensors}
     -mfix-esp32-psram-cache-issue
 
 [env]