diff --git a/layout/generic/nsFrameSetFrame.cpp b/layout/generic/nsFrameSetFrame.cpp
index 48b425cfe2a2..0a0681a60ea2 100644
--- a/layout/generic/nsFrameSetFrame.cpp
+++ b/layout/generic/nsFrameSetFrame.cpp
@@ -295,6 +295,8 @@ void nsHTMLFramesetFrame::CalculateRowCol(nsIPresContext* aPresContext, nscoord
   if (relativeTotal != relativeMax) { 
     Scale(relativeMax, numRelative, relative, aValues);
   }
+  
+  delete [] fixed; delete [] percent; delete [] relative;
 }
 
 
diff --git a/layout/html/document/src/nsFrameSetFrame.cpp b/layout/html/document/src/nsFrameSetFrame.cpp
index 48b425cfe2a2..0a0681a60ea2 100644
--- a/layout/html/document/src/nsFrameSetFrame.cpp
+++ b/layout/html/document/src/nsFrameSetFrame.cpp
@@ -295,6 +295,8 @@ void nsHTMLFramesetFrame::CalculateRowCol(nsIPresContext* aPresContext, nscoord
   if (relativeTotal != relativeMax) { 
     Scale(relativeMax, numRelative, relative, aValues);
   }
+  
+  delete [] fixed; delete [] percent; delete [] relative;
 }