diff --git a/libretro-common/gfx/math/matrix_4x4.c b/libretro-common/gfx/math/matrix_4x4.c
index c132c5730f..15846ba17a 100644
--- a/libretro-common/gfx/math/matrix_4x4.c
+++ b/libretro-common/gfx/math/matrix_4x4.c
@@ -155,11 +155,13 @@ void matrix_4x4_translate(math_matrix_4x4 *out, float x,
 void matrix_4x4_projection(math_matrix_4x4 *out, float znear,
       float zfar)
 {
+   float delta_z = zfar - znear;
+
    memset(out, 0, sizeof(*out));
    MAT_ELEM_4X4(*out, 0, 0) = znear;
    MAT_ELEM_4X4(*out, 1, 1) = zfar;
-   MAT_ELEM_4X4(*out, 2, 2) = (zfar + znear) / (zfar - znear);
-   MAT_ELEM_4X4(*out, 2, 3) = -2.0f * zfar * znear / (zfar - znear);
+   MAT_ELEM_4X4(*out, 2, 2) = (zfar + znear) / delta_z;
+   MAT_ELEM_4X4(*out, 2, 3) = -2.0f * zfar * znear / delta_z;
    MAT_ELEM_4X4(*out, 3, 2) = -1.0f;
 }