diff --git a/utest/bpu.test.cpp b/utest/bpu.test.cpp
index caa350c8..601b8347 100644
--- a/utest/bpu.test.cpp
+++ b/utest/bpu.test.cpp
@@ -19,17 +19,6 @@ namespace xo {
         constexpr bpu_abbrev_type bpu_mpl_abbrev = bpu.abbrev();
 
         TEST_CASE("bpu", "[bpu]") {
-            //constexpr bool c_debug_flag = false;
-
-            // can get bits from /dev/random by uncommenting the 2nd line below
-            //uint64_t seed = xxx;
-            //rng::Seed<xoshio256ss> seed;
-
-            //auto rng = xo::rng::xoshiro256ss(seed);
-
-            //scope log(XO_DEBUG2(c_debug_flag, "TEST_CASE.bpu"));
-            //log && log("(A)", xtag("foo", foo));
-
             static_assert(bpu_mpl_abbrev<bpu64_type::unit_power(bu::gram)> == bpu64_type::unit_power(bu::gram).abbrev());
             REQUIRE(bpu_mpl_abbrev<bpu64_type::unit_power(bu::gram)> == bpu64_type::unit_power(bu::gram).abbrev());
         } /*TEST_CASE(bpu)*/
@@ -37,14 +26,7 @@ namespace xo {
         TEST_CASE("flatstring_from_exponent", "[flatstring_from_exponent]") {
             constexpr bool c_debug_flag = false;
 
-            // can get bits from /dev/random by uncommenting the 2nd line below
-            //uint64_t seed = xxx;
-            //rng::Seed<xoshio256ss> seed;
-
-            //auto rng = xo::rng::xoshiro256ss(seed);
-
             scope log(XO_DEBUG2(c_debug_flag, "TEST_CASE.flatstring_from_exponent"));
-            //log && log("(A)", xtag("foo", foo));
 
             log && log(xtag("^-3", flatstring_from_exponent(-3,1)));
             log && log(xtag("^-2", flatstring_from_exponent(-2,1)));
@@ -75,16 +57,9 @@ namespace xo {
         } /*TEST_CASE(flatstring_from_exponent)*/
 
         TEST_CASE("bpu_abbrev", "[bpu_abbrev]") {
-            constexpr bool c_debug_flag = true;
-
-            // can get bits from /dev/random by uncommenting the 2nd line below
-            //uint64_t seed = xxx;
-            //rng::Seed<xoshio256ss> seed;
-
-            //auto rng = xo::rng::xoshiro256ss(seed);
+            constexpr bool c_debug_flag = false;
 
             scope log(XO_DEBUG2(c_debug_flag, "TEST_CASE.bpu2_assemble_abbrev"));
-            //log && log("(A)", xtag("foo", foo));
 
             log && log(xtag("1/(kg*kg)", bpu_abbrev(dim::mass, scalefactor_ratio_type(1000, 1), power_ratio_type(-2, 1))));
             log && log(xtag("1/kg", bpu_abbrev(dim::mass, scalefactor_ratio_type(1000, 1), power_ratio_type(-1, 1))));