diff --git a/scripts/wlbg/src/bg_frag.glsl b/scripts/wlbg/src/bg_frag.glsl
index 2faa732..3c09ebe 100644
--- a/scripts/wlbg/src/bg_frag.glsl
+++ b/scripts/wlbg/src/bg_frag.glsl
@@ -1,5 +1,7 @@
 #version 430
 
+precision highp float;
+
 uniform float time;
 
 in vec2 fragCoord;