--- a/gfx/layers/d3d11/TextureD3D11.cpp
+++ b/gfx/layers/d3d11/TextureD3D11.cpp
@@ -362,17 +362,17 @@ TextureClientD3D11::BorrowDrawTarget()
       gfxWarning() << "Invalid draw target for borrowing";
   }
   return mDrawTarget;
 }
 
 static const GUID sD3D11TextureUsage =
 { 0xd89275b0, 0x6c7d, 0x4038, { 0xb5, 0xfa, 0x4d, 0x87, 0x16, 0xd5, 0xcc, 0x4e } };
 
-/* This class get's it's lifetime tied to a D3D texture
+/* This class gets its lifetime tied to a D3D texture
  * and increments memory usage on construction and decrements
  * on destruction */
 class TextureMemoryMeasurer : public IUnknown
 {
 public:
   TextureMemoryMeasurer(size_t aMemoryUsed)
   {
     mMemoryUsed = aMemoryUsed;