diff --git a/source/common/utility/vectors.h b/source/common/utility/vectors.h
index f9f84421a..1dafe2d88 100644
--- a/source/common/utility/vectors.h
+++ b/source/common/utility/vectors.h
@@ -312,6 +312,8 @@ struct TVector3
 	{
 	}
 
+	TVector3(nullptr_t) = delete;
+
 	TVector3(const TVector3 &other) = default;
 
 	TVector3 (const Vector2 &xy, vec_t z)
diff --git a/source/sw/src/sounds.cpp b/source/sw/src/sounds.cpp
index 72c450316..1268dad30 100644
--- a/source/sw/src/sounds.cpp
+++ b/source/sw/src/sounds.cpp
@@ -563,7 +563,7 @@ void SWSoundEngine::CalcPosVel(int type, const void* source, const float pt[3],
         }
 
 
-        if ((chanflags & CHANF_LISTENERZ) && campos != nullptr && type != SOURCE_None)
+        if ((chanflags & CHANF_LISTENERZ) && type != SOURCE_None)
         {
             pos->Y = campos.Y;
         }