diff --git a/layout/forms/nsFormControlFrame.h b/layout/forms/nsFormControlFrame.h
index bc4adc51afff..182a53f9bbfd 100644
--- a/layout/forms/nsFormControlFrame.h
+++ b/layout/forms/nsFormControlFrame.h
@@ -45,7 +45,7 @@ public:
                          nsGUIEvent* aEvent,
                          nsEventStatus* aEventStatus) MOZ_OVERRIDE;
 
-  virtual nscoord GetBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
 
   /**
     * Respond to the request to resize and/or reflow
diff --git a/layout/generic/nsBlockFrame.h b/layout/generic/nsBlockFrame.h
index 645ddef963ed..e81d79c31b55 100644
--- a/layout/generic/nsBlockFrame.h
+++ b/layout/generic/nsBlockFrame.h
@@ -149,8 +149,8 @@ public:
                           nsIFrame*       aOldFrame);
   virtual const nsFrameList& GetChildList(ChildListID aListID) const;
   virtual void GetChildLists(nsTArray<ChildList>* aLists) const;
-  virtual nscoord GetBaseline() const;
-  virtual nscoord GetCaretBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
+  virtual nscoord GetCaretBaseline() const MOZ_OVERRIDE;
   virtual void DestroyFrom(nsIFrame* aDestructRoot);
   virtual nsSplittableType GetSplittableType() const;
   virtual bool IsFloatContainingBlock() const;
diff --git a/layout/generic/nsBulletFrame.h b/layout/generic/nsBulletFrame.h
index 89b67386ed67..f5a722e9f926 100644
--- a/layout/generic/nsBulletFrame.h
+++ b/layout/generic/nsBulletFrame.h
@@ -91,7 +91,7 @@ public:
   
   virtual bool IsEmpty() MOZ_OVERRIDE;
   virtual bool IsSelfEmpty() MOZ_OVERRIDE;
-  virtual nscoord GetBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
 
   float GetFontSizeInflation() const;
   bool HasFontSizeInflation() const {
diff --git a/layout/generic/nsFirstLetterFrame.h b/layout/generic/nsFirstLetterFrame.h
index df7170803dc3..05b80fcbecdf 100644
--- a/layout/generic/nsFirstLetterFrame.h
+++ b/layout/generic/nsFirstLetterFrame.h
@@ -59,7 +59,7 @@ public:
                     nsReflowStatus&          aStatus) MOZ_OVERRIDE;
 
   virtual bool CanContinueTextRun() const MOZ_OVERRIDE;
-  virtual nscoord GetBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
 
 //override of nsFrame method
   NS_IMETHOD GetChildFrameContainingOffset(int32_t inContentOffset,
diff --git a/layout/generic/nsFrame.h b/layout/generic/nsFrame.h
index c7ff4f5d30dc..c55f9988ea7e 100644
--- a/layout/generic/nsFrame.h
+++ b/layout/generic/nsFrame.h
@@ -159,7 +159,7 @@ public:
   virtual void SetAdditionalStyleContext(int32_t aIndex,
                                          nsStyleContext* aStyleContext);
   virtual void SetParent(nsIFrame* aParent);
-  virtual nscoord GetBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
   virtual const nsFrameList& GetChildList(ChildListID aListID) const;
   virtual void GetChildLists(nsTArray<ChildList>* aLists) const;
 
diff --git a/layout/generic/nsInlineFrame.h b/layout/generic/nsInlineFrame.h
index 51e1675f4a1d..95cddc7b62c4 100644
--- a/layout/generic/nsInlineFrame.h
+++ b/layout/generic/nsInlineFrame.h
@@ -91,7 +91,7 @@ public:
   virtual bool CanContinueTextRun() const MOZ_OVERRIDE;
 
   virtual void PullOverflowsFromPrevInFlow();
-  virtual nscoord GetBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
 
   /**
    * Return true if the frame is leftmost frame or continuation.
diff --git a/layout/generic/nsTextFrame.h b/layout/generic/nsTextFrame.h
index 906719a563e2..21df713afb28 100644
--- a/layout/generic/nsTextFrame.h
+++ b/layout/generic/nsTextFrame.h
@@ -173,7 +173,7 @@ public:
   
   virtual bool IsEmpty();
   virtual bool IsSelfEmpty() { return IsEmpty(); }
-  virtual nscoord GetBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
   
   /**
    * @return true if this text frame ends with a newline character.  It
diff --git a/layout/tables/nsTableFrame.h b/layout/tables/nsTableFrame.h
index 85eb2e02bdf4..950a32c68e47 100644
--- a/layout/tables/nsTableFrame.h
+++ b/layout/tables/nsTableFrame.h
@@ -357,7 +357,7 @@ public:
   /** helper to get the cell spacing Y style value */
   nscoord GetCellSpacingY();
  
-  virtual nscoord GetBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
   /** return the row span of a cell, taking into account row span magic at the bottom
     * of a table. The row span equals the number of rows spanned by aCell starting at
     * aStartRowIndex, and can be smaller if aStartRowIndex is greater than the row
diff --git a/layout/tables/nsTableOuterFrame.h b/layout/tables/nsTableOuterFrame.h
index 4b1109d50626..d35df0ddb4d5 100644
--- a/layout/tables/nsTableOuterFrame.h
+++ b/layout/tables/nsTableOuterFrame.h
@@ -102,7 +102,7 @@ public:
                                          const nsRect&           aDirtyRect,
                                          const nsDisplayListSet& aLists);
 
-  virtual nscoord GetBaseline() const;
+  virtual nscoord GetBaseline() const MOZ_OVERRIDE;
 
   virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
   virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;