diff --git a/gfx/thebes/gfxHarfBuzzShaper.cpp b/gfx/thebes/gfxHarfBuzzShaper.cpp
index 3e06ccdab4b..c61b86348dc 100644
--- a/gfx/thebes/gfxHarfBuzzShaper.cpp
+++ b/gfx/thebes/gfxHarfBuzzShaper.cpp
@@ -83,6 +83,7 @@ gfxHarfBuzzShaper::~gfxHarfBuzzShaper()
 {
     hb_blob_destroy(mCmapTable);
     hb_blob_destroy(mHmtxTable);
+    hb_blob_destroy(mKernTable);
     hb_face_destroy(mHBFace);
 }