diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index 4a2a840b..98d09a60 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -52,7 +52,15 @@ IsleApp::IsleApp()
 	m_frameDelta = 10;
 	m_windowActive = 1;
 
-	m_videoParam = MxVideoParam(MxRect32(0, 0, 639, 479), NULL, 1, MxVideoParamFlags());
+#ifdef COMPAT_MODE
+    {
+        MxRect32 r(0, 0, 639, 479);
+        MxVideoParamFlags flags;
+        m_videoParam = MxVideoParam(r, NULL, 1, flags);
+    }
+#else
+    m_videoParam = MxVideoParam(MxRect32(0, 0, 639, 479), NULL, 1, MxVideoParamFlags());
+#endif
 	m_videoParam.Flags().Set16Bit(MxDirectDraw::GetPrimaryBitDepth() == 16);
 
 	m_windowHandle = NULL;
diff --git a/LEGO1/LEGO1.mingw.def b/LEGO1/LEGO1.mingw.def
index 3181724b..0db8eb88 100644
--- a/LEGO1/LEGO1.mingw.def
+++ b/LEGO1/LEGO1.mingw.def
@@ -67,10 +67,8 @@ EXPORTS
   _ZN12MxDirectDraw18GetPrimaryBitDepthEv
   _ZN12MxDirectDraw5PauseEi@4 = _ZN12MxDirectDraw5PauseEi
   _ZN12MxVideoParam13SetDeviceNameEPc@4 = _ZN12MxVideoParam13SetDeviceNameEPc
-  _ZN12MxVideoParamC1ERK8MxRect32P9MxPalettejRK17MxVideoParamFlags@16 = _ZN12MxVideoParamC1ERK8MxRect32P9MxPalettejRK17MxVideoParamFlags
   _ZN12MxVideoParamC1ERS_@4 = _ZN12MxVideoParamC1ERS_
   _ZN12MxVideoParamC1Ev
-  _ZN12MxVideoParamC2ERK8MxRect32P9MxPalettejRK17MxVideoParamFlags@16 = _ZN12MxVideoParamC2ERK8MxRect32P9MxPalettejRK17MxVideoParamFlags
   _ZN12MxVideoParamC2ERS_@4 = _ZN12MxVideoParamC2ERS_
   _ZN12MxVideoParamC2Ev
   _ZN12MxVideoParamD1Ev
diff --git a/LEGO1/omni/include/mxvideoparam.h b/LEGO1/omni/include/mxvideoparam.h
index 33aecb32..885a8c92 100644
--- a/LEGO1/omni/include/mxvideoparam.h
+++ b/LEGO1/omni/include/mxvideoparam.h
@@ -16,10 +16,10 @@ class MxVideoParam {
 	__declspec(dllexport) MxVideoParam();
 	__declspec(dllexport) MxVideoParam(MxVideoParam& p_videoParam);
 	__declspec(dllexport) MxVideoParam(
-		COMPAT_CONST MxRect32& p_rect,
+		MxRect32& p_rect,
 		MxPalette* p_palette,
 		MxULong p_backBuffers,
-		COMPAT_CONST MxVideoParamFlags& p_flags
+		MxVideoParamFlags& p_flags
 	);
 	__declspec(dllexport) MxVideoParam& operator=(const MxVideoParam& p_videoParam);
 	__declspec(dllexport) ~MxVideoParam();
diff --git a/LEGO1/omni/src/video/mxvideoparam.cpp b/LEGO1/omni/src/video/mxvideoparam.cpp
index c34e832c..da948ab9 100644
--- a/LEGO1/omni/src/video/mxvideoparam.cpp
+++ b/LEGO1/omni/src/video/mxvideoparam.cpp
@@ -22,10 +22,10 @@ MxVideoParam::MxVideoParam()
 
 // FUNCTION: LEGO1 0x100beca0
 MxVideoParam::MxVideoParam(
-	COMPAT_CONST MxRect32& p_rect,
+	MxRect32& p_rect,
 	MxPalette* p_palette,
 	MxULong p_backBuffers,
-	COMPAT_CONST MxVideoParamFlags& p_flags
+	MxVideoParamFlags& p_flags
 )
 {
 	this->m_rect = p_rect;