diff --git a/orx-jumpflood/src/main/resources/shaders/gl3/encode-subpixel.frag b/orx-jumpflood/src/main/resources/shaders/gl3/encode-subpixel.frag
index 0a9c8079..705325eb 100644
--- a/orx-jumpflood/src/main/resources/shaders/gl3/encode-subpixel.frag
+++ b/orx-jumpflood/src/main/resources/shaders/gl3/encode-subpixel.frag
@@ -8,7 +8,7 @@ out vec4 o_color;
 
 float zd(float d) {
     if (d < 0.0001) {
-        return 1;
+        return 1.0;
     } else {
         return d;
     }