diff --git a/data/shader/skydome.fsh b/data/shader/skydome.fsh
index 7d3f4e2..68f52d2 100644
--- a/data/shader/skydome.fsh
+++ b/data/shader/skydome.fsh
@@ -14,7 +14,7 @@ uniform vec3 cameraCenter;
 uniform vec3 sunColor;
 uniform vec3 directionalVector;
 
-const float sunSize = 40.0;
+const float sunSize = 20.0;
 
 void main() {
     vec4 textureColor = vec4(0.0, 0.0, 0.0, 1.0);
diff --git a/data/shader/skydome.vsh b/data/shader/skydome.vsh
index 2dc7b65..0fa520e 100644
--- a/data/shader/skydome.vsh
+++ b/data/shader/skydome.vsh
@@ -17,6 +17,6 @@ out vec4 sunPosition;
 void main() {
     fragPosition = modelMatrix * vec4(aPosition, 1.0);
     vTexCoord = aTexCoord;
-    sunPosition = (normalize(vec4(directionalVector, 0.0)) * skydomeSize) + vec4(cameraCenter, 1.0);
+    sunPosition = (normalize(vec4(directionalVector, 0.0)) * skydomeSize) + vec4(cameraCenter.x, 0, cameraCenter.z, 1.0);
     gl_Position = modelViewProjectionMatrix * vec4(aPosition, 1.0);
 }