diff --git a/core/fxge/dib/cstretchengine.h b/core/fxge/dib/cstretchengine.h
index fc23e85..c61522e 100644
--- a/core/fxge/dib/cstretchengine.h
+++ b/core/fxge/dib/cstretchengine.h
@@ -32,11 +32,15 @@
   ~CStretchEngine();
 
   bool Continue(PauseIndicatorIface* pPause);
-
   bool StartStretchHorz();
   bool ContinueStretchHorz(PauseIndicatorIface* pPause);
   void StretchVert();
 
+  const FXDIB_ResampleOptions& GetResampleOptionsForTest() const {
+    return m_ResampleOptions;
+  }
+
+ private:
   class CWeightTable {
    public:
     CWeightTable();
diff --git a/core/fxge/dib/cstretchengine_unittest.cpp b/core/fxge/dib/cstretchengine_unittest.cpp
index 055ed25..c3e3b8d 100644
--- a/core/fxge/dib/cstretchengine_unittest.cpp
+++ b/core/fxge/dib/cstretchengine_unittest.cpp
@@ -25,8 +25,8 @@
   dib_source->Load(nullptr, stream.Get());
   CStretchEngine engine(nullptr, FXDIB_Format::k8bppRgb, 500, 500, clip_rect,
                         dib_source, FXDIB_ResampleOptions());
-  EXPECT_TRUE(engine.m_ResampleOptions.bInterpolateBilinear);
-  EXPECT_FALSE(engine.m_ResampleOptions.bHalftone);
-  EXPECT_FALSE(engine.m_ResampleOptions.bNoSmoothing);
-  EXPECT_FALSE(engine.m_ResampleOptions.bLossy);
+  EXPECT_TRUE(engine.GetResampleOptionsForTest().bInterpolateBilinear);
+  EXPECT_FALSE(engine.GetResampleOptionsForTest().bHalftone);
+  EXPECT_FALSE(engine.GetResampleOptionsForTest().bNoSmoothing);
+  EXPECT_FALSE(engine.GetResampleOptionsForTest().bLossy);
 }