diff --git a/src/parser/DASHTree.h b/src/parser/DASHTree.h
index 3006af933..b5ca26fd4 100644
--- a/src/parser/DASHTree.h
+++ b/src/parser/DASHTree.h
@@ -42,7 +42,7 @@ class ATTR_DLL_LOCAL CDashTree : public adaptive::AdaptiveTree
                                  size_t pos,
                                  uint64_t timestamp,
                                  uint64_t fragmentDuration,
-                                 uint32_t movieTimescale);
+                                 uint32_t movieTimescale) override;
 
 protected:
   virtual CDashTree* Clone() const override { return new CDashTree{*this}; }
diff --git a/src/parser/SmoothTree.h b/src/parser/SmoothTree.h
index 37652c7c7..9619fc6cf 100644
--- a/src/parser/SmoothTree.h
+++ b/src/parser/SmoothTree.h
@@ -38,7 +38,7 @@ class ATTR_DLL_LOCAL CSmoothTree : public AdaptiveTree
                                  size_t pos,
                                  uint64_t timestamp,
                                  uint64_t fragmentDuration,
-                                 uint32_t mediaTimescale);
+                                 uint32_t mediaTimescale) override;
 
 protected:
   virtual bool ParseManifest(const std::string& data);