diff --git a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
index 64f57d4ad0..e4a04102ff 100644
--- a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
+++ b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
@@ -417,7 +417,7 @@ const char *GenerateVertexShaderCode(u32 components, API_TYPE ApiType)
 
 				if (components & (VB_HAS_NRM1|VB_HAS_NRM2)) {
 					// transform the light dir into tangent space
-					WRITE(p, "ldir = normalize(" I_LIGHTS"[%d + 3].xyz - pos.xyz);\n", texinfo.embosslightshift);
+					WRITE(p, "ldir = normalize(" I_LIGHTS"[5*%d + 3].xyz - pos.xyz);\n", texinfo.embosslightshift);
 					WRITE(p, "o.tex%d.xyz = o.tex%d.xyz + float3(dot(ldir, _norm1), dot(ldir, _norm2), 0.0f);\n", i, texinfo.embosssourceshift);
 				}
 				else