diff --git a/.drone.yml b/.drone.yml
index 293b48f..b24ff98 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -8,6 +8,11 @@ platform:
   arch: arm
 
 steps:
+- name: static check
+  commands:
+  - cd gateway
+  - pio check -e pro-mini
+
 - name: native tests
   commands:
   - cd gateway
diff --git a/gateway/platformio.ini b/gateway/platformio.ini
index 7c9ead9..69c5ca1 100644
--- a/gateway/platformio.ini
+++ b/gateway/platformio.ini
@@ -8,6 +8,9 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
+[platformio]
+default_envs = pro-mini
+
 [env:pro-mini]
 platform = atmelavr
 board = miniatmega328
@@ -21,6 +24,10 @@ lib_deps =
 	adafruit/DHT sensor library@1.3.10
 build_flags = -D DHT_SENSOR=0
 upload_port = /dev/ttyUSB0
+check_tool = cppcheck
+check_flags = --enable=all
+check_skip_packages = yes
+check_severity = medium, high
 
 [env:native]
 platform = native
diff --git a/libraries/RF24 b/libraries/RF24
deleted file mode 160000
index cb04b38..0000000
--- a/libraries/RF24
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit cb04b381f9b68cf60cac7ecb18346fb3291a80a6