diff --git a/src/renderers/shaders/ShaderChunk/colorspace_pars_fragment.glsl.js b/src/renderers/shaders/ShaderChunk/colorspace_pars_fragment.glsl.js
index 53c28873685215..0eabd05a8c6d26 100644
--- a/src/renderers/shaders/ShaderChunk/colorspace_pars_fragment.glsl.js
+++ b/src/renderers/shaders/ShaderChunk/colorspace_pars_fragment.glsl.js
@@ -30,6 +30,11 @@ vec4 sRGBTransferOETF( in vec4 value ) {
 	return vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );
 }
 
+// @deprecated, r156
+vec4 LinearToLinear( in vec4 value ) {
+	return value;
+}
+
 // @deprecated, r156
 vec4 LinearTosRGB( in vec4 value ) {
 	return sRGBTransferOETF( value );