diff --git a/modules/fieldlines/shaders/fieldline_gs.glsl b/modules/fieldlines/shaders/fieldline_gs.glsl
index cdeca1641c..32be0f108c 100644
--- a/modules/fieldlines/shaders/fieldline_gs.glsl
+++ b/modules/fieldlines/shaders/fieldline_gs.glsl
@@ -49,7 +49,7 @@ void ABufferEmitVertex(vec4 pos) {
 
     // project the position to view space
     position =  modelViewProjection*position;
-    gl_Position = position;
+    gl_Position = z_normalization(position);
     EmitVertex();
 }