diff --git a/cogl/cogl/cogl-matrix.c b/cogl/cogl/cogl-matrix.c
index 879e13eaf..06bcfe619 100644
--- a/cogl/cogl/cogl-matrix.c
+++ b/cogl/cogl/cogl-matrix.c
@@ -85,20 +85,6 @@ COGL_GTYPE_DEFINE_BOXED (Matrix, matrix,
                          cogl_matrix_copy,
                          cogl_matrix_free);
 
-/*
- * Symbolic names to some of the entries in the matrix
- *
- * These are handy for the viewport mapping, which is expressed as a matrix.
- */
-#define MAT_SX 0
-#define MAT_SY 5
-#define MAT_SZ 10
-#define MAT_TX 12
-#define MAT_TY 13
-#define MAT_TZ 14
-
-#define LEN_SQUARED_3FV( V ) ((V)[0]*(V)[0]+(V)[1]*(V)[1]+(V)[2]*(V)[2])
-
 /*
  * \defgroup MatFlags MAT_FLAG_XXX-flags
  *