diff --git a/Source/Core/VideoBackends/OGL/TextureCache.cpp b/Source/Core/VideoBackends/OGL/TextureCache.cpp
index f58a71fc92..7fd59d5d43 100644
--- a/Source/Core/VideoBackends/OGL/TextureCache.cpp
+++ b/Source/Core/VideoBackends/OGL/TextureCache.cpp
@@ -380,8 +380,7 @@ TextureCache::TextureCache()
 		"void main()\n"
 		"{\n"
 		"	vec2 rawpos = vec2(gl_VertexID&1, gl_VertexID&2);\n"
-		"	f_uv0.xy = mix(copy_position.xy, copy_position.zw, rawpos) / vec2(textureSize(samp9, 0).xy);\n"
-		"	f_uv0.z = 0;\n"
+		"	f_uv0 = vec3(mix(copy_position.xy, copy_position.zw, rawpos) / vec2(textureSize(samp9, 0).xy), 0.0);\n"
 		"	gl_Position = vec4(rawpos*2.0-1.0, 0.0, 1.0);\n"
 		"}\n";