diff --git a/src/plugins/colorblindnesscorrection/shaders/Tritanopia.frag b/src/plugins/colorblindnesscorrection/shaders/Tritanopia.frag
index 7ae73fbe3d..b9347e00e2 100644
--- a/src/plugins/colorblindnesscorrection/shaders/Tritanopia.frag
+++ b/src/plugins/colorblindnesscorrection/shaders/Tritanopia.frag
@@ -5,9 +5,6 @@ uniform vec4 modulation;
 uniform float saturation;
 varying vec2 texcoord0;
 
-in vec2 texcoord0;
-out vec4 fragColor;
-
 void main()
 {
     vec4 tex = texture2D(sampler, texcoord0);