diff --git a/.github/workflows/build_check.yml b/.github/workflows/build_check.yml
index 98b7038..542fe65 100644
--- a/.github/workflows/build_check.yml
+++ b/.github/workflows/build_check.yml
@@ -50,7 +50,7 @@ jobs:
     name: Run cppcheck
     runs-on: ubuntu-latest
     env:
-      CPPCHECK_ARGS: --enable=all --std=c++14 -I lib/BoardFinder -I lib/ConfigurationManagement -I lib/Display -I lib/LoRa -I lib/LoRa_APRS -I lib/NTPClient -I lib/PowerManagement -I lib/System -I lib/TimeLib -i lib/Display -i lib/LoRa -i lib/NTPClient -i lib/TimeLib src lib
+      CPPCHECK_ARGS: --enable=all --std=c++14 --inline-suppr -I lib/BoardFinder -I lib/ConfigurationManagement -I lib/Display -I lib/LoRa -I lib/LoRa_APRS -I lib/NTPClient -I lib/PowerManagement -I lib/System -I lib/TimeLib -i lib/Display -i lib/LoRa -i lib/NTPClient -i lib/TimeLib src lib
     steps:
       - name: checkout code
         uses: actions/checkout@v2
diff --git a/src/TaskAprsIs.h b/src/TaskAprsIs.h
index 2466996..69fd66d 100644
--- a/src/TaskAprsIs.h
+++ b/src/TaskAprsIs.h
@@ -8,7 +8,7 @@
 
 class AprsIsTask : public Task {
 public:
-  AprsIsTask(TaskQueue<std::shared_ptr<APRSMessage>> &toAprsIs);
+  explicit AprsIsTask(TaskQueue<std::shared_ptr<APRSMessage>> &toAprsIs);
   virtual ~AprsIsTask();
 
   virtual bool setup(std::shared_ptr<System> system) override;
diff --git a/src/TaskModem.h b/src/TaskModem.h
index 95010b0..7d324fd 100644
--- a/src/TaskModem.h
+++ b/src/TaskModem.h
@@ -7,7 +7,7 @@
 
 class ModemTask : public Task {
 public:
-  ModemTask(TaskQueue<std::shared_ptr<APRSMessage>> &fromModem);
+  explicit ModemTask(TaskQueue<std::shared_ptr<APRSMessage>> &fromModem);
   virtual ~ModemTask();
 
   virtual bool setup(std::shared_ptr<System> system) override;