diff --git a/src/core/PICA/shader_gen_glsl.cpp b/src/core/PICA/shader_gen_glsl.cpp
index 9802be90..1db239f9 100644
--- a/src/core/PICA/shader_gen_glsl.cpp
+++ b/src/core/PICA/shader_gen_glsl.cpp
@@ -72,11 +72,6 @@ std::string FragmentGenerator::getDefaultVertexShader() {
 		out float gl_ClipDistance[2];
 	#endif
 
-		vec4 abgr8888ToVec4(uint abgr) {
-			const float scale = 1.0 / 255.0;
-			return scale * vec4(float(abgr & 0xffu), float((abgr >> 8) & 0xffu), float((abgr >> 16) & 0xffu), float(abgr >> 24));
-		}
-
 		void main() {
 			gl_Position = a_coords;
 			vec4 colourAbs = abs(a_vertexColour);
@@ -677,4 +672,4 @@ void FragmentGenerator::compileFog(std::string& shader, const PICA::FragmentConf
 	shader += "vec2 value = texelFetch(u_tex_luts, ivec2(int(clamped_index), 24), 0).rg;"; // fog LUT is past the light LUTs
 	shader += "float fog_factor = clamp(value.r + value.g * delta, 0.0, 1.0);";
 	shader += "combinerOutput.rgb = mix(fog_color, combinerOutput.rgb, fog_factor);";
-}
\ No newline at end of file
+}