diff --git a/core/math/projection.cpp b/core/math/projection.cpp
index a304318e2e4a..9d5dc8b4d609 100644
--- a/core/math/projection.cpp
+++ b/core/math/projection.cpp
@@ -408,7 +408,6 @@ real_t Projection::get_z_far() const {
 			matrix[11] - matrix[10],
 			matrix[15] - matrix[14]);
 
-	new_plane.normal = -new_plane.normal;
 	new_plane.normalize();
 
 	return new_plane.d;