diff --git a/source/App/EncoderApp/EncApp.cpp b/source/App/EncoderApp/EncApp.cpp
index 01c3d6262bae007a1b2a596c69f3f00111dfb788..d847bba2175ece99b10f1d64e102aa033db79d45 100644
--- a/source/App/EncoderApp/EncApp.cpp
+++ b/source/App/EncoderApp/EncApp.cpp
@@ -266,10 +266,8 @@ void EncApp::xInitLibCfg( int layerIdx )
                                  m_confWinRight / SPS::getWinUnitX(m_inputChromaFormatIDC),
                                  m_confWinTop / SPS::getWinUnitY(m_inputChromaFormatIDC),
                                  m_confWinBottom / SPS::getWinUnitY(m_inputChromaFormatIDC));
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   m_cEncLib.setExplicitScalingWindowEnabled                      ( m_explicitScalingWindowEnabled );
   m_cEncLib.setScalingWindow                                     ( m_scalWinLeft / SPS::getWinUnitX( m_inputChromaFormatIDC ), m_scalWinRight / SPS::getWinUnitX( m_inputChromaFormatIDC ), m_scalWinTop / SPS::getWinUnitY( m_inputChromaFormatIDC ), m_scalWinBottom / SPS::getWinUnitY( m_inputChromaFormatIDC ) );
-#endif
   m_cEncLib.setScalingRatio                                      ( m_scalingRatioHor, m_scalingRatioVer );
   m_cEncLib.setGOPBasedRPREnabledFlag                            (m_gopBasedRPREnabledFlag);
   m_cEncLib.setGOPBasedRPRQPThreshold                            (m_gopBasedRPRQPThreshold);
@@ -1921,11 +1919,7 @@ void EncApp::xWriteOutput(int numEncoded, std::list<PelUnitBuf *> &recBufList)
         }
         else
         {
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
           ppsID = ((sps.getMaxPicWidthInLumaSamples() != pcPicYuvRec->get(COMPONENT_Y).width || sps.getMaxPicHeightInLumaSamples() != pcPicYuvRec->get(COMPONENT_Y).height) && !m_explicitScalingWindowEnabled) ? m_resChangeInClvsEnabled ? (ENC_PPS_ID_RPR + layerId) : layerId : layerId;
-#else
-          ppsID = (sps.getMaxPicWidthInLumaSamples() != pcPicYuvRec->get(COMPONENT_Y).width || sps.getMaxPicHeightInLumaSamples() != pcPicYuvRec->get(COMPONENT_Y).height) ? (ENC_PPS_ID_RPR + layerId) : layerId;
-#endif
         }
         const PPS& pps = *m_cEncLib.getPPS(ppsID);
         if( m_cEncLib.isResChangeInClvsEnabled() && m_cEncLib.getUpscaledOutput() )
diff --git a/source/App/EncoderApp/EncAppCfg.cpp b/source/App/EncoderApp/EncAppCfg.cpp
index df00b6e2127d8f650cc8e42a06471ff47bd4ec70..0fc0dc5f87522b142ae1907c7e5d3961cf4532df 100644
--- a/source/App/EncoderApp/EncAppCfg.cpp
+++ b/source/App/EncoderApp/EncAppCfg.cpp
@@ -815,13 +815,11 @@ bool EncAppCfg::parseCfg( int argc, char* argv[] )
   ("ConfWinRight",                                    m_confWinRight,                                       0, "Right offset for window conformance mode 3")
   ("ConfWinTop",                                      m_confWinTop,                                         0, "Top offset for window conformance mode 3")
   ("ConfWinBottom",                                   m_confWinBottom,                                      0, "Bottom offset for window conformance mode 3")
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   ("ScalingWindow",                                   m_explicitScalingWindowEnabled,                   false, "Enable scaling window")
   ("ScalWinLeft,-swl",                                m_scalWinLeft,                                        0, "Left offset for scaling window")
   ("ScalWinRight,-swr",                               m_scalWinRight,                                       0, "Right offset for scaling window")
   ("ScalWinTop,-swt",                                 m_scalWinTop,                                         0, "Top offset for scaling window")
   ("ScalWinBottom,-swb",                              m_scalWinBottom,                                      0, "Bottom offset for scaling window")
-#endif
   ("AccessUnitDelimiter",                             m_AccessUnitDelimiter,                            false, "Enable Access Unit Delimiter NALUs")
   ("EnablePictureHeaderInSliceHeader",                m_enablePictureHeaderInSliceHeader,                true, "Enable Picture Header in Slice Header")
   ("FrameRate,-fr",                                   frameRate,                            std::to_string(0), "Frame rate")
@@ -4248,7 +4246,6 @@ bool EncAppCfg::xCheckParameter()
                "Top conformance window offset must be an integer multiple of the specified chroma subsampling");
   xConfirmPara(m_confWinBottom % SPS::getWinUnitY(m_chromaFormatIdc) != 0,
                "Bottom conformance window offset must be an integer multiple of the specified chroma subsampling");
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   xConfirmPara(m_explicitScalingWindowEnabled && (m_scalingRatioHor != 1.0 || m_scalingRatioVer != 1.0 || m_gopBasedRPREnabledFlag), "ScalingWindow cannot be enabled when GOPBasedRPR is enabled");
   xConfirmPara(m_scalWinLeft    % SPS::getWinUnitX(m_chromaFormatIdc) != 0, "Left scaling window offset must be an integer multiple of the specified chroma subsampling");
   xConfirmPara(m_scalWinRight   % SPS::getWinUnitX(m_chromaFormatIdc) != 0, "Right scaling window offset must be an integer multiple of the specified chroma subsampling");
@@ -4266,7 +4263,6 @@ bool EncAppCfg::xCheckParameter()
                "The values of SubWidthC * (pps_scaling_win_left_offset + pps_scaling_win_right_offset) shall be greater than or equal to -pps_pic_width_in_luma_samples * 15 and less than pps_pic_width_in_luma_samples");
   xConfirmPara(((m_scalWinTop+m_scalWinBottom) < -m_sourceHeight * 15) || ((m_scalWinTop+m_scalWinBottom) >= m_sourceHeight),
                "The values of SubHeightC * (pps_scaling_win_top_offset + pps_scaling_win_bottom_offset) shall be greater than or equal to -pps_pic_height_in_luma_samples * 15 and less than pps_pic_height_in_luma_samples");
-#endif
 
 
   // max CU width and height should be power of 2
diff --git a/source/App/EncoderApp/EncAppCfg.h b/source/App/EncoderApp/EncAppCfg.h
index 2527f72a56289fd85a70be8752392fa0700b8072..2f9717861d4d41d2b4634ca07ecd7fa7fdd20ebd 100644
--- a/source/App/EncoderApp/EncAppCfg.h
+++ b/source/App/EncoderApp/EncAppCfg.h
@@ -111,13 +111,11 @@ protected:
   int       m_confWinRight;
   int       m_confWinTop;
   int       m_confWinBottom;
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   bool      m_explicitScalingWindowEnabled;
   int       m_scalWinLeft;
   int       m_scalWinRight;
   int       m_scalWinTop;
   int       m_scalWinBottom;
-#endif
   int       m_sourcePadding[2];                                       ///< number of padded pixels for width and height
   int       m_firstValidFrame;
   int       m_lastValidFrame;
diff --git a/source/Lib/CommonLib/TypeDef.h b/source/Lib/CommonLib/TypeDef.h
index 206e6bb760dcd7a9fd90834fdef52d0b13d45a28..23e45099a829925a9af8bbdeeb392ae415636e47 100644
--- a/source/Lib/CommonLib/TypeDef.h
+++ b/source/Lib/CommonLib/TypeDef.h
@@ -73,7 +73,6 @@
 
 
 
-#define JVET_AE0181_SCALING_WINDOW_ENABLED                1  // JVET-AE0181: Scaling window support
 
 #define JVET_AE0134_END_REPEATED_INFERENCE                1  // JVET_AE0134 item 2: At the end of a bitstream or CLVS, add repeated inference of NNPF for creating pictures corresponding to input pictures
 
diff --git a/source/Lib/EncoderLib/EncCfg.h b/source/Lib/EncoderLib/EncCfg.h
index 11e0ca47597d86b03c3fda5e802ba338fcd96524..fd0f88cd0ea4ebadf216b66a3802be5c72072363 100644
--- a/source/Lib/EncoderLib/EncCfg.h
+++ b/source/Lib/EncoderLib/EncCfg.h
@@ -161,10 +161,8 @@ protected:
   int       m_sourceWidth;
   int       m_sourceHeight;
   Window    m_conformanceWindow;
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   bool      m_explicitScalingWindowEnabled;
   Window    m_scalingWindow;
-#endif
   int       m_sourcePadding[2];
   int       m_framesToBeEncoded;
   int       m_firstValidFrame;
@@ -1216,10 +1214,8 @@ public:
 
   Window   &getConformanceWindow()                           { return m_conformanceWindow; }
   void      setConformanceWindow (int confLeft, int confRight, int confTop, int confBottom ) { m_conformanceWindow.setWindow (confLeft, confRight, confTop, confBottom); }
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   void      setExplicitScalingWindowEnabled(bool enabled)    { m_explicitScalingWindowEnabled = enabled; }
   void      setScalingWindow (int scalingLeft, int scalingRight, int scalingTop, int scalingBottom ) { m_scalingWindow.setWindow (scalingLeft, scalingRight, scalingTop, scalingBottom); }
-#endif
 
   void      setFramesToBeEncoded            ( int   i )      { m_framesToBeEncoded = i; }
 
diff --git a/source/Lib/EncoderLib/EncLib.cpp b/source/Lib/EncoderLib/EncLib.cpp
index f919c72afe58df71cdeaccca5125aaa5a0ee648d..ac09801999a8f248cf9c677b12dcdb8503bdb390 100644
--- a/source/Lib/EncoderLib/EncLib.cpp
+++ b/source/Lib/EncoderLib/EncLib.cpp
@@ -199,13 +199,11 @@ void EncLib::init(AUWriterIf *auWriterIf)
     pps0.setConformanceWindow( m_conformanceWindow );
     pps0.setConformanceWindowFlag( m_conformanceWindow.getWindowEnabledFlag() );
   }
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   if (m_explicitScalingWindowEnabled)
   {
     pps0.setExplicitScalingWindowFlag(true);
     pps0.setScalingWindow(m_scalingWindow);
   }
-#endif
   if (!pps0.getExplicitScalingWindowFlag())
   {
     pps0.setScalingWindow(pps0.getConformanceWindow());
@@ -1391,7 +1389,6 @@ void EncLib::xInitSPS( SPS& sps )
 
   sps.setMaxPicWidthInLumaSamples( m_sourceWidth );
   sps.setMaxPicHeightInLumaSamples( m_sourceHeight );
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   bool scalingWindowResChanged = false;
   if (m_multiLayerEnabledFlag && m_vps->getMaxLayers() > 0)
   {
@@ -1441,7 +1438,6 @@ void EncLib::xInitSPS( SPS& sps )
     sps.setMaxPicWidthInLumaSamples(maxPicWidth);
     sps.setMaxPicHeightInLumaSamples(maxPicHeight);
   }
-#endif
 
   if (m_resChangeInClvsEnabled)
   {
@@ -1730,13 +1726,8 @@ void EncLib::xInitSPS( SPS& sps )
   sps.setInterLayerPresentFlag( m_layerId > 0 && m_vps->getMaxLayers() > 1 && !m_vps->getAllIndependentLayersFlag() && !m_vps->getIndependentLayerFlag( m_vps->getGeneralLayerIdx( m_layerId ) ) );
   CHECK( m_vps->getIndependentLayerFlag( m_vps->getGeneralLayerIdx( m_layerId ) ) && sps.getInterLayerPresentFlag(), " When vps_independent_layer_flag[GeneralLayerIdx[nuh_layer_id ]]  is equal to 1, the value of inter_layer_ref_pics_present_flag shall be equal to 0." );
 
-#if JVET_AE0181_SCALING_WINDOW_ENABLED
   sps.setResChangeInClvsEnabledFlag(m_resChangeInClvsEnabled || m_constrainedRaslEncoding || scalingWindowResChanged);
   sps.setRprEnabledFlag(m_rprEnabledFlag || m_explicitScalingWindowEnabled || scalingWindowResChanged);
-#else
-  sps.setResChangeInClvsEnabledFlag(m_resChangeInClvsEnabled || m_constrainedRaslEncoding);
-  sps.setRprEnabledFlag(m_rprEnabledFlag);
-#endif
   sps.setGOPBasedRPREnabledFlag(m_gopBasedRPREnabledFlag);
   sps.setLog2ParallelMergeLevelMinus2( m_log2ParallelMergeLevelMinus2 );