diff --git a/units/x12_conv.cpp b/units/x12_conv.cpp
index 418f7244..da2e9c56 100644
--- a/units/x12_conv.cpp
+++ b/units/x12_conv.cpp
@@ -147,7 +147,11 @@ static UNITS_CPP14_CONSTEXPR_OBJECT std::array<unitD, 486> x12_units{{
     unitD{"BV", "BUSHEL DRY IMPERIAL", precise::one},
     unitD{"BW", "BASE WEIGHT", precise::one},
     unitD{"BX", "BOX", precise::one},
-    unitD{"BZ", "MILLION BTUS/DEKATHERM", precise::one},
+    unitD{
+        "BZ",
+        "MILLION BTUS/DEKATHERM",
+        precise::mega* precise::btu /
+            precise_unit(10.0, precise::energy::therm_ec)},
     unitD{"C0", "CALLS", precise::one},
     unitD{"C1", "COMPOSITE PRODUCT POUNDS (TOTAL WEIGHT)", precise::one},
     unitD{"C2", "CARSET", precise::one},
@@ -187,8 +191,8 @@ static UNITS_CPP14_CONSTEXPR_OBJECT std::array<unitD, 486> x12_units{{
     unitD{"DI", "DISPENSER", precise::one},
     unitD{"DJ", "DECAGRAM", precise_unit(10.0, precise::g)},
     unitD{"DK", "KILOMETER", precise::km},
-    unitD{"DL", "DECILITER", precise::one},
-    unitD{"DM", "DECIMETER", precise::one},
+    unitD{"DL", "DECILITER", precise::deci* precise::L},
+    unitD{"DM", "DECIMETER", precise::deci* precise::meter},
     unitD{"DO", "DOLLARS U.S.", precise::currency},
     unitD{"DP", "DOZEN PAIR", precise::one},
     unitD{"DQ", "DATA RECORD", precise::one},