diff --git a/src/math.f90 b/src/math.f90
index 01304c112..ff127fd68 100644
--- a/src/math.f90
+++ b/src/math.f90
@@ -108,8 +108,6 @@ module math
    math_mul3333xx33, &
    math_mul3333xx3333, &
    math_mul33x33, &
-   math_mul66x66, &
-   math_mul99x99, &
    math_mul33x3, &
    math_mul33x3_complex, &
    math_mul66x6 , &