diff --git a/inorganic/mercury.arc b/inorganic/mercury.arc
index 49b769b7b..f87b8ee1e 100644
--- a/inorganic/mercury.arc
+++ b/inorganic/mercury.arc
@@ -20,7 +20,7 @@ fix_mercury.112
 mina
 speed 0.5
 material 2
-value 4000
+value 400
 immune 72
 type 73
 nrof 1
diff --git a/inorganic/true_lead.arc b/inorganic/true_lead.arc
index 30dd33e31..579f02442 100644
--- a/inorganic/true_lead.arc
+++ b/inorganic/true_lead.arc
@@ -3,7 +3,7 @@ name block
 title of true lead
 face true_lead.111
 material 2
-value 13000
+value 530
 immune 68
 type 73
 nrof 1