diff --git a/LEGO1/omni/include/mxdisplaysurface.h b/LEGO1/omni/include/mxdisplaysurface.h
index 15c0c043..a6925e3d 100644
--- a/LEGO1/omni/include/mxdisplaysurface.h
+++ b/LEGO1/omni/include/mxdisplaysurface.h
@@ -64,7 +64,7 @@ class MxDisplaySurface : public MxCore {
 		MxS32 p_bottom,
 		MxS32 p_width,
 		MxS32 p_height,
-		MxBool p_und
+		MxBool p_RLE
 	); // vtable+0x30
 	virtual undefined4 VTable0x34(
 		undefined4,
diff --git a/LEGO1/omni/src/video/mxdisplaysurface.cpp b/LEGO1/omni/src/video/mxdisplaysurface.cpp
index b8fde690..2d179d01 100644
--- a/LEGO1/omni/src/video/mxdisplaysurface.cpp
+++ b/LEGO1/omni/src/video/mxdisplaysurface.cpp
@@ -491,7 +491,7 @@ void MxDisplaySurface::VTable0x30(
 	MxS32 p_bottom,
 	MxS32 p_width,
 	MxS32 p_height,
-	MxBool p_und
+	MxBool p_RLE
 )
 {
 	if (!GetRectIntersection(
@@ -527,7 +527,7 @@ void MxDisplaySurface::VTable0x30(
 	switch (m_surfaceDesc.ddpfPixelFormat.dwRGBBitCount) {
 	case 8: {
 		MxU8* surface = (MxU8*) ddsd.lpSurface + p_right + (p_bottom * ddsd.lPitch);
-		if (p_und) {
+		if (p_RLE) {
 			MxS32 size = p_bitmap->GetBmiHeader()->biSizeImage;
 			DrawTransparentRLE(data, surface, size, p_width, p_height, ddsd.lPitch, 8);
 		}
@@ -553,7 +553,7 @@ void MxDisplaySurface::VTable0x30(
 	}
 	case 16: {
 		MxU8* surface = (MxU8*) ddsd.lpSurface + (2 * p_right) + (p_bottom * ddsd.lPitch);
-		if (p_und) {
+		if (p_RLE) {
 			MxS32 size = p_bitmap->GetBmiHeader()->biSizeImage;
 			DrawTransparentRLE(data, surface, size, p_width, p_height, ddsd.lPitch, 16);
 		}
diff --git a/tools/ncc/skip.yml b/tools/ncc/skip.yml
index 4f39ddc8..06c6e0a5 100644
--- a/tools/ncc/skip.yml
+++ b/tools/ncc/skip.yml
@@ -13,6 +13,7 @@ m_HELDesc: 'Allow this variable name'
 p_HWDesc: 'Allow this variable name'
 p_HELDesc: 'Allow this variable name'
 e_RAMStream: 'Allow this enum constant'
+p_RLE: 'Allow this parameter name'
 p_milliseconds: 'Probably a bug with function call'
 m_increaseAmount: "Can't currently detect member in union"
 m_increaseFactor: "Can't currently detect member in union"