diff --git a/developer/src/kmcmplib/src/CompilerErrors.h b/developer/src/kmcmplib/src/CompilerErrors.h
index 0493c09852..dfe520f3cd 100644
--- a/developer/src/kmcmplib/src/CompilerErrors.h
+++ b/developer/src/kmcmplib/src/CompilerErrors.h
@@ -9,11 +9,14 @@ class CompilerMessage {
 public:
   virtual void report(enum KmnCompilerMessages::KmnCompilerMessages msg, const std::vector<std::string>& parameters) = 0;
   virtual void report(enum KmnCompilerMessages::KmnCompilerMessages msg) = 0;
+  virtual ~CompilerMessage() = default;
 };
 
 class DefaultCompilerMessage : public CompilerMessage {
+public:
   virtual void report(enum KmnCompilerMessages::KmnCompilerMessages msg, const std::vector<std::string>& parameters) ;
   virtual void report(enum KmnCompilerMessages::KmnCompilerMessages msg);
+  virtual ~DefaultCompilerMessage() = default;
 };
 
 namespace kmcmp {
diff --git a/developer/src/kmcmplib/src/validation.h b/developer/src/kmcmplib/src/validation.h
index 2879cce40e..876b511908 100644
--- a/developer/src/kmcmplib/src/validation.h
+++ b/developer/src/kmcmplib/src/validation.h
@@ -17,6 +17,7 @@ public:
   Validation(CompilerMessage &compilerMessage) : compilerMessage(compilerMessage) {
   }
 
+  virtual ~Validation() = default;
   virtual KMX_BOOL ValidateIdentifier(KMX_WCHAR const *p, size_t maxLength);
 };