diff --git a/drivers/gles2/shader_compiler_gles2.cpp b/drivers/gles2/shader_compiler_gles2.cpp
index 6a12d3b3df4..0da4f5192d5 100644
--- a/drivers/gles2/shader_compiler_gles2.cpp
+++ b/drivers/gles2/shader_compiler_gles2.cpp
@@ -876,8 +876,7 @@ ShaderCompilerGLES2::ShaderCompilerGLES2() {
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_VERTEX]["EXTRA_MATRIX"]="extra_matrix";
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_VERTEX]["TIME"]="time";
 
-	//mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_FRAGMENT]["POSITION"]="gl_Position";
-	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_FRAGMENT]["POSITION"]="gl_FragCoord";
+	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_FRAGMENT]["POSITION"]="(gl_FragCoord.xy)";
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_FRAGMENT]["NORMAL"]="normal";
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_FRAGMENT]["NORMALMAP"]="normal_map";
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_FRAGMENT]["NORMALMAP_DEPTH"]="normal_depth";
@@ -892,7 +891,7 @@ ShaderCompilerGLES2::ShaderCompilerGLES2() {
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_FRAGMENT]["POINT_COORD"]="gl_PointCoord";
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_FRAGMENT]["TIME"]="time";
 
-	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_LIGHT]["POSITION"]="gl_Position";
+	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_LIGHT]["POSITION"]="(gl_FragCoord.xy)";
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_LIGHT]["NORMAL"]="normal";
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_LIGHT]["UV"]="uv_interp";
 	mode_replace_table[ShaderLanguage::SHADER_CANVAS_ITEM_LIGHT]["COLOR"]="color";
diff --git a/servers/visual/shader_language.cpp b/servers/visual/shader_language.cpp
index 1a0ce137939..0c224ea7170 100644
--- a/servers/visual/shader_language.cpp
+++ b/servers/visual/shader_language.cpp
@@ -1153,7 +1153,7 @@ const ShaderLanguage::BuiltinsDef ShaderLanguage::ci_vertex_builtins_defs[]={
 const ShaderLanguage::BuiltinsDef ShaderLanguage::ci_fragment_builtins_defs[]={
 
 	{ "SRC_COLOR", TYPE_VEC4},
-	{ "POSITION", TYPE_VEC4},
+	{ "POSITION", TYPE_VEC2},
 	{ "NORMAL", TYPE_VEC3},
 	{ "NORMALMAP", TYPE_VEC3},
 	{ "NORMALMAP_DEPTH", TYPE_FLOAT},
@@ -1175,7 +1175,7 @@ const ShaderLanguage::BuiltinsDef ShaderLanguage::ci_fragment_builtins_defs[]={
 
 const ShaderLanguage::BuiltinsDef ShaderLanguage::ci_light_builtins_defs[]={
 
-	{ "POSITION", TYPE_VEC4},
+	{ "POSITION", TYPE_VEC2},
 	{ "NORMAL", TYPE_VEC3},
 	{ "UV", TYPE_VEC2},
 	{ "COLOR", TYPE_VEC4},