diff --git a/src/blackmisc/logcategorylist.h b/src/blackmisc/logcategorylist.h
index a67748f47..c5cca55a3 100644
--- a/src/blackmisc/logcategorylist.h
+++ b/src/blackmisc/logcategorylist.h
@@ -50,6 +50,9 @@ namespace BlackMisc
         //! Initializer list constructor.
         CLogCategoryList(std::initializer_list<CLogCategory> il) : CSequence<CLogCategory>(il) {}
 
+        //! Prevent accidental use of the initializer list constructor.
+        CLogCategoryList(std::nullptr_t) = delete;
+
         //! Copy assignment.
         CLogCategoryList &operator =(const CLogCategoryList &) = default;
 
diff --git a/src/plugins/simulator/fs9/simulatorfs9.cpp b/src/plugins/simulator/fs9/simulatorfs9.cpp
index 20e59b532..bf86ffeb7 100644
--- a/src/plugins/simulator/fs9/simulatorfs9.cpp
+++ b/src/plugins/simulator/fs9/simulatorfs9.cpp
@@ -79,7 +79,7 @@ namespace BlackSimPlugin
             FS_PBH pbhstrct;
             pbhstrct.pbh = positionVelocity.pbh;
             int pitch = std::floor(pbhstrct.pitch / CFs9Sdk::pitchMultiplier());
-            if (pitch < -90 || pitch > 89) { CLogMessage(nullptr).warning("FS9: Pitch value out of limits: %1") << pitch; }
+            if (pitch < -90 || pitch > 89) { CLogMessage().warning("FS9: Pitch value out of limits: %1") << pitch; }
             int bank = std::floor(pbhstrct.bank / CFs9Sdk::bankMultiplier());
 
             // MSFS has inverted pitch and bank angles