diff --git a/src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramBuilder.cpp b/src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramBuilder.cpp
index 4c4f886b..d9b6c983 100644
--- a/src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramBuilder.cpp
+++ b/src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramBuilder.cpp
@@ -2065,9 +2065,9 @@ public:
 					"  readtex1 = TextureMipMap(uTex1, tcData1, 0.0);		\n"
 					"														\n"
 					"  mediump float fMaxTile = float(uMaxTile);			\n"
-					"  mediump vec2 dx = abs(dFdx(vLodTexCoord)) * uScreenScale;			\n"
-					"  mediump vec2 dy = abs(dFdy(vLodTexCoord)) * uScreenScale;			\n"
-					"  mediump float lod = max(max(dx.x,dx.y), max(dy.x,dy.y));				\n"
+					"  mediump vec2 dx = abs(dFdx(vLodTexCoord)) * uScreenScale;	\n"
+					"  mediump vec2 dy = abs(dFdy(vLodTexCoord)) * uScreenScale;	\n"
+					"  mediump float lod = max(dx.x + dx.y, dy.x + dy.y);	\n" /*LINEAR*/
 					"  bool magnify = lod < 1.0;							\n"
 					"  mediump float lod_tile = magnify ? 0.0 : floor(log2(floor(lod))); \n"
 					"  bool distant = lod > 128.0 || lod_tile >= fMaxTile;	\n"
@@ -2174,9 +2174,9 @@ public:
 					"  READ_TEX_MIPMAP(readtex1, uTex1, tcData1, 0);					\n"
 					"																		\n"
 					"  mediump float fMaxTile = float(uMaxTile);							\n"
-					"  mediump vec2 dx = abs(dFdx(vLodTexCoord)) * uScreenScale;			\n"
-					"  mediump vec2 dy = abs(dFdy(vLodTexCoord)) * uScreenScale;			\n"
-					"  mediump float lod = max(max(dx.x,dx.y), max(dy.x,dy.y));				\n"
+					"  mediump vec2 dx = abs(dFdx(vLodTexCoord));							\n"
+					"  dx *= uScreenScale;													\n"
+					"  mediump float lod = max(dx.x, dx.y);									\n"
 					"  bool magnify = lod < 1.0;											\n"
 					"  mediump float lod_tile = magnify ? 0.0 : floor(log2(floor(lod)));	\n"
 					"  bool distant = lod > 128.0 || lod_tile >= fMaxTile;					\n"