diff --git a/core/dictgen/res/BaseSelectionRule.h b/core/dictgen/res/BaseSelectionRule.h
index a9645cbd168d5..28f418a00784a 100644
--- a/core/dictgen/res/BaseSelectionRule.h
+++ b/core/dictgen/res/BaseSelectionRule.h
@@ -91,6 +91,8 @@ class BaseSelectionRule
 
    BaseSelectionRule(long index, ESelect sel, const std::string& attributeName, const std::string& attributeValue, cling::Interpreter &interp, const char* selFileName = "",long lineno=-1);
 
+   virtual ~BaseSelectionRule() = default;
+
    virtual void DebugPrint() const;
    virtual void Print(std::ostream &out) const = 0;
 
diff --git a/core/dictgen/res/OptionParser.h b/core/dictgen/res/OptionParser.h
index 3cf6d57052a30..a7c83f91ec102 100644
--- a/core/dictgen/res/OptionParser.h
+++ b/core/dictgen/res/OptionParser.h
@@ -1400,6 +1400,8 @@ struct Parser::Action
     (void) args;
     return true;
   }
+
+  virtual ~Action() = default;
 };
 
 /**
@@ -1718,6 +1720,8 @@ struct PrintUsageImplementation
     virtual void operator()(const char*, int)
     {
     }
+
+    virtual ~IStringWriter() = default;
   };
 
   /**