diff --git a/engine/src/flutter/impeller/entity/shaders/position_color.vert b/engine/src/flutter/impeller/entity/shaders/position_color.vert
index 9a6cdfeac1d..d6b35c464f7 100644
--- a/engine/src/flutter/impeller/entity/shaders/position_color.vert
+++ b/engine/src/flutter/impeller/entity/shaders/position_color.vert
@@ -13,9 +13,9 @@ frame_info;
 in vec2 position;
 in vec4 color;
 
-out vec4 v_color;
+out f16vec4 v_color;
 
 void main() {
   gl_Position = frame_info.mvp * vec4(position, 0.0, 1.0);
-  v_color = color;
+  v_color = f16vec4(color);
 }