diff --git a/lib/Domain/ITargetHost.hpp b/lib/Domain/ITargetHost.hpp
index a95fd75..7afe92f 100644
--- a/lib/Domain/ITargetHost.hpp
+++ b/lib/Domain/ITargetHost.hpp
@@ -33,6 +33,8 @@ class Target {
 
 class ITargetHost {
 public:
+  virtual ~ITargetHost() {}
+
   /**
    * Return light intensity for given target
    * value [0;1024]