diff --git a/config/hypr/shaders/blue-light-filter.glsl b/config/hypr/shaders/blue-light-filter.glsl
index f6e1d73..ffbb004 100644
--- a/config/hypr/shaders/blue-light-filter.glsl
+++ b/config/hypr/shaders/blue-light-filter.glsl
@@ -1,12 +1,15 @@
-precision mediump float;
-varying vec2 v_texcoord;
+#version 300 es
+precision highp float;
+
+in vec2 v_texcoord;
 uniform sampler2D tex;
+out vec4 fragColor;
 
 // Wärmefilter ~3500K: weniger Blau, leicht mehr Rot
 void main() {
-    vec4 c = texture2D(tex, v_texcoord);
+    vec4 c = texture(tex, v_texcoord);
     c.r = min(c.r * 1.06, 1.0);
     c.g = c.g * 0.96;
     c.b = c.b * 0.72;
-    gl_FragColor = c;
+    fragColor = c;
 }