diff --git a/.github/workflows/build_check.yml b/.github/workflows/build_check.yml
index 7034fd3..3298f0b 100644
--- a/.github/workflows/build_check.yml
+++ b/.github/workflows/build_check.yml
@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
-      - run: platformio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high --skip-packages --flags "--suppress=*:*.pio\* --inline-suppr" -v
+      - run: platformio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high --skip-packages --flags "--suppress=*:*.pio\* --inline-suppr lib/common/src" -v
 
   PlatformIO-Build:
     runs-on: ubuntu-latest
diff --git a/.gitmodules b/.gitmodules
index 2a34780..e8683d4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "lib"]
-	path = lib/Common
+	path = lib/common
 	url = ../LoRa_APRS_Common
diff --git a/lib/Common b/lib/common
similarity index 100%
rename from lib/Common
rename to lib/common
diff --git a/platformio.ini b/platformio.ini
index d03274d..5a3bcde 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -16,7 +16,7 @@ lib_deps =
 	peterus/LoRa-APRS-Lib @ 0.0.5
 check_tool = cppcheck
 check_flags =
-    cppcheck: --suppress=*:*.pio\* --inline-suppr
+    cppcheck: --suppress=*:*.pio\* --inline-suppr lib/common/src
 monitor_flags = --raw
 # activate for OTA Update, use the CALLSIGN from is-cfg.h as upload_port:
 #upload_protocol = espota
diff --git a/src/project_configuration.h b/src/project_configuration.h
index 5a65724..1e8a71a 100644
--- a/src/project_configuration.h
+++ b/src/project_configuration.h
@@ -114,8 +114,8 @@ public:
 	virtual ~ProjectConfigurationManagement() {}
 
 private:
-	virtual Configuration * readProjectConfiguration(DynamicJsonDocument & data);
-	virtual void writeProjectConfiguration(Configuration * conf, DynamicJsonDocument & data);
+	virtual Configuration * readProjectConfiguration(DynamicJsonDocument & data) override;
+	virtual void writeProjectConfiguration(Configuration * conf, DynamicJsonDocument & data) override;
 };
 
 #endif