diff --git a/OpenGL.cpp b/OpenGL.cpp
index 4755b872..284b543a 100644
--- a/OpenGL.cpp
+++ b/OpenGL.cpp
@@ -890,12 +890,12 @@ void OGLRender::drawRect(int _ulx, int _uly, int _lrx, int _lry, float *_pColor)
 	m_rect[0].y = (float)_uly * (-2.0f * scaleY) + 1.0;
 	m_rect[0].z = Z;
 	m_rect[0].w = W;
-	m_rect[1].x = (float)(_lrx + 1) * (2.0f * scaleX) - 1.0;
+	m_rect[1].x = (float)_lrx * (2.0f * scaleX) - 1.0;
 	m_rect[1].y = m_rect[0].y;
 	m_rect[1].z = Z;
 	m_rect[1].w = W;
 	m_rect[2].x = m_rect[0].x;
-	m_rect[2].y = (float)(_lry + 1) * (-2.0f * scaleY) + 1.0;
+	m_rect[2].y = (float)_lry * (-2.0f * scaleY) + 1.0;
 	m_rect[2].z = Z;
 	m_rect[2].w = W;
 	m_rect[3].x = m_rect[1].x;
diff --git a/gDP.cpp b/gDP.cpp
index 3b9176c0..64cb0da6 100644
--- a/gDP.cpp
+++ b/gDP.cpp
@@ -880,7 +880,8 @@ void gDPFillRectangle( s32 ulx, s32 uly, s32 lrx, s32 lry )
 	if (gDP.otherMode.cycleType == G_CYC_FILL) {
 		++lrx;
 		++lry;
-	}
+	} else if (lry == uly)
+		++lry;
 	if (gDP.depthImageAddress == gDP.colorImage.address) {
 		// Game may use depth texture as auxilary color texture. Example: Mario Tennis
 		// If color is not depth clear color, that is most likely the case