diff --git a/McZapkie/friction.h b/McZapkie/friction.h
index 39679b7c..c58895a9 100644
--- a/McZapkie/friction.h
+++ b/McZapkie/friction.h
@@ -41,6 +41,7 @@ class TFricMat
 public:
     virtual double GetFC(double N, double Vel); 
   
+    virtual ~TFricMat() = default;
 };
 
 
diff --git a/McZapkie/hamulce.h b/McZapkie/hamulce.h
index 9df2b88c..dea32c16 100644
--- a/McZapkie/hamulce.h
+++ b/McZapkie/hamulce.h
@@ -272,6 +272,7 @@ class TReservoir
 
 	/// <summary>Default constructor — creates a 1 L reservoir at zero pressure.</summary>
 	TReservoir() = default;
+	virtual ~TReservoir() = default;
 };
 
 /// <summary>Pointer typedef for a reservoir instance.</summary>
@@ -504,6 +505,7 @@ class TBrake
 	{
 		UniversalFlag = flag;
 	} // przycisk uniwersalny
+	virtual ~TBrake() = default;
 };
 
 /// <summary>
@@ -1086,6 +1088,7 @@ class TDriverHandle
 	{
 		memset(Sounds, 0, sizeof(Sounds));
 	}
+	virtual ~TDriverHandle() = default;
 };
 
 /// <summary>
diff --git a/global_include/interfaces/IMaterial.h b/global_include/interfaces/IMaterial.h
index 1cf03592..874e77d0 100644
--- a/global_include/interfaces/IMaterial.h
+++ b/global_include/interfaces/IMaterial.h
@@ -57,4 +57,5 @@ struct IMaterial
 		} null_material{};
 		return &null_material;
 	}
+	virtual ~IMaterial() = default;
 };
\ No newline at end of file
diff --git a/global_include/interfaces/ITexture.h b/global_include/interfaces/ITexture.h
index 10e40417..8e4c1955 100644
--- a/global_include/interfaces/ITexture.h
+++ b/global_include/interfaces/ITexture.h
@@ -73,4 +73,5 @@ struct ITexture
 		} null_texture{};
 		return &null_texture;
 	}
+	virtual ~ITexture() = default;
 };
\ No newline at end of file
diff --git a/network/message.h b/network/message.h
index 436fd3eb..2424309f 100644
--- a/network/message.h
+++ b/network/message.h
@@ -21,6 +21,7 @@ struct message
 	message(type_e t) : type(t) {}
 	virtual void serialize(std::ostream &stream) const {}
 	virtual void deserialize(std::istream &stream) {}
+	virtual ~message() = default;
 };
 
 struct client_hello : public message
diff --git a/network/network.h b/network/network.h
index a0dff096..5fcc17df 100644
--- a/network/network.h
+++ b/network/network.h
@@ -47,6 +47,7 @@ namespace network
 			DEAD
 		};
 		peer_state state;
+		virtual ~connection() = default;
 	};
 
 	class server
@@ -104,6 +105,7 @@ namespace network
 		int get_awaiting_frames() const {
 			return static_cast<int>(delta_queue.size());
 		}
+		virtual ~client() = default;
 	};
 
 	class backend_manager
@@ -112,6 +114,7 @@ namespace network
 		virtual std::shared_ptr<server> create_server(std::shared_ptr<std::fstream>, const std::string &conf) = 0;
 		virtual std::shared_ptr<client> create_client(const std::string &conf) = 0;
 		virtual void update() = 0;
+		virtual ~backend_manager() = default;
 	};
 
     // HACK: static initialization order fiasco fix